Quotes on Theory
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Authors: 7 in order of recurrence Show in alphabetic order
Karl Popper (35/91)
Albert Einstein (24/64)
Yogi Berra (4/5)
Arthur Conan Doyle (2/3)
Hans Jonas (2/5)
Kurt Lewin (1/1)
Marcel Proust (1/55)
Authors: 7 in alphabetic order Show in order of recurrence
Albert Einstein (24/64)
Arthur Conan Doyle (2/3)
Hans Jonas (2/5)
Karl Popper (35/91)
Kurt Lewin (1/1)
Marcel Proust (1/55)
Yogi Berra (4/5)

Subjects: 452 in order of recurrence Show in alphabetic order
Miscellaneous (552/2141)
Religion (138/415)
Mind (63/244)
Knowledge (59/361)
Love (42/239)
Life (33/139)
Truth (32/147)
Humour (31/74)
Marriage (29/99)
Psychology (29/231)
Politics (28/160)
Attention (27/30)
Changing (26/96)
Freedom (26/136)
Education (23/35)
Thinking (23/114)
God (22/88)
Mankind (22/82)
Work (19/36)
Death (17/61)
Stupidity (17/78)
Happiness (16/154)
Science (16/49)
Fear (15/46)
Philosophy (15/126)
Feelings (14/77)
Hope (14/35)
Human nature (14/189)
Morality (14/35)
Success (14/31)
Talking (14/31)
Madness (13/62)
Wisdom (13/93)
Conformism (12/46)
Responsibility (12/25)
Understanding (12/49)
War (12/22)
Writing (12/43)
Art (11/57)
History (11/28)
Intelligence (11/79)
Language (11/39)
Management (11/14)
Time (11/30)
Faith (10/17)
Future (10/24)
Human relations (10/333)
Perception (10/22)
Ageing (9/24)
Consciousness (9/30)
Ethics (9/84)
Judging (9/65)
Sex (9/49)
Solitude (9/127)
Violence (9/18)
Beauty (8/54)
Evolution (8/14)
Human values (8/25)
Ignorance (8/20)
Jokes (8/16)
Reading (8/19)
Women (8/81)
Democracy (7/11)
Failure (7/9)
Government (7/12)
Laughing (7/13)
Nature (7/24)
Problems and solutions (7/24)
Progress (7/22)
Reason (7/61)
Atheism (6/15)
Books (6/20)
Economy (6/13)
Friendship (6/34)
Human differences (6/58)
Imagination (6/27)
Information technology (6/11)
Law (6/18)
Learning (6/49)
Life and Death (6/25)
Music (6/22)
Society (6/64)
Beliefs (5/16)
Business (5/8)
Civilization (5/8)
Illusion (5/26)
Reality (5/18)
Teaching (5/15)
Technology (5/12)
Theory (5/10)
Will (5/41)
Action (4/5)
Communication (4/32)
Computer (4/7)
Creativity (4/22)
Crime (4/5)
Criticism (4/18)
Culture (4/24)
Doubting (4/14)
Dreaming (4/11)
Drinking (4/4)
Generosity (4/15)
Genius (4/21)
Goals (4/8)
Information (4/18)
Invention (4/5)
Listening (4/5)
Logics (4/14)
Lying (4/46)
Man & Animals (4/5)
Mediocrity (4/29)
Men and Women (4/20)
Money (4/35)
Motivations (4/127)
Peace (4/9)
Perfection (4/6)
Poetry (4/23)
Poverty (4/10)
Rationality (4/11)
Self-knowledge (4/10)
Universe (4/7)
Ability (3/8)
Anger (3/8)
Animals (3/5)
Appreciation (3/4)
Authority (3/4)
Boredom (3/8)
Children (3/16)
Choice (3/26)
Communism (3/4)
Cynism (3/5)
Ecology (3/11)
Equality (3/8)
Evil (3/20)
Experience (3/8)
Food (3/5)
Growing (3/4)
Honour (3/5)
Idealism (3/4)
Ideas (3/19)
Justice (3/21)
Leadership (3/19)
Memory (3/20)
Organization (3/6)
Personality (3/14)
Playing (3/5)
Possession (3/7)
Power (3/14)
Questions (3/10)
Quotations (3/3)
Reason and Feeling (3/14)
Revolutions (3/9)
Richness (3/11)
Self-control (3/8)
Simplicity (3/7)
Suicide (3/30)
Taste (3/7)
Virtue (3/16)
Adaptation (2/4)
Ambition (2/7)
Aphorisms (2/25)
Burocracy (2/3)
Censorship (2/4)
Chance (2/23)
Competition (2/9)
Conversation (2/10)
Courage (2/19)
Deception (2/6)
Diplomacy (2/3)
Emotions (2/8)
Error (2/18)
Facts (2/4)
Family (2/7)
Fault (2/5)
Fighting (2/2)
Fun (2/3)
Glory (2/3)
Good and Evil (2/19)
Gossip (2/3)
Honesty (2/8)
Hospitality (2/2)
Humility (2/9)
Ideals (2/3)
Idleness (2/5)
Indifference (2/8)
Innovation (2/2)
Internet (2/6)
Journalism (2/6)
Luck (2/9)
Neutrality (2/2)
Parents (2/6)
Passion (2/5)
Pleasure (2/19)
Prejudice (2/30)
Principles (2/3)
Ridicule (2/5)
Sadness (2/4)
School (2/6)
Shame (2/7)
Suffering (2/8)
Tact (2/3)
Talent (2/4)
Television (2/13)
Tolerance (2/9)
Unconscious (2/43)
Vanity (2/8)
Admiration (1/4)
Advertising (1/2)
Advicing (1/6)
Aiming (1/1)
America (1/1)
Anarchy (1/3)
Apology (1/1)
Architecture (1/3)
Arguing (1/3)
Behaviour (1/2)
Bigotry (1/1)
Capitalism (1/2)
Catastrophe (1/1)
Celebrity (1/1)
Character (1/3)
Charity (1/3)
Commitment (1/1)
Conviction (1/1)
Cooking (1/1)
Cooperation (1/1)
Cowardice (1/3)
Crying (1/3)
Desire (1/4)
Desperation (1/1)
Destiny (1/6)
Destruction (1/1)
Devil (1/3)
Discipline (1/2)
Disobedience (1/6)
Duty (1/9)
Effectiveness (1/1)
Efficiency (1/2)
Egotism (1/11)
Envy (1/13)
Eternity (1/1)
Excellence (1/2)
Faithfulness (1/7)
Faking (1/5)
Fantasy (1/3)
Fashion (1/6)
Feminism (1/1)
Fools (1/1)
Forgiving (1/6)
Friendliness (1/2)
Generations (1/1)
Good breeding (1/1)
Gratitude (1/6)
Habit (1/7)
Harm (1/1)
Health (1/2)
Hell (1/6)
Help (1/2)
Hierarchy (1/7)
Human types (1/2)
Ideologies (1/2)
Illness (1/5)
Immortality (1/2)
Indignation (1/1)
Individualism (1/1)
Innocence (1/2)
Intellectuals (1/7)
Interactions (1/38)
Joy (1/3)
Kindness (1/3)
Kissing (1/2)
Laziness (1/4)
Literature (1/14)
Loss (1/1)
Marketing (1/1)
Martyrdom (1/4)
Mathematics (1/5)
Maxims (1/2)
Medicine (1/7)
Melancholy (1/1)
Memories (1/4)
Middle Ages (1/1)
Militarism (1/1)
Misanthropy (1/14)
Moralism (1/4)
Mysticism (1/2)
Nations (1/1)
Normality (1/2)
Obedience (1/72)
Objectivity (1/2)
Opinions (1/4)
Optimism (1/7)
Pain (1/10)
Past (1/5)
Patience (1/5)
People (1/11)
Perfectionism (1/2)
Pessimism (1/5)
Photography (1/3)
Presumption (1/7)
Procreation (1/1)
Psychiatry (1/3)
Public property (1/1)
Punishment (1/2)
Racism (1/2)
Reputation (1/2)
Rich and Poor (1/3)
Risk (1/1)
Sacrifice (1/1)
Safety (1/1)
Secrets (1/7)
Self-esteem (1/9)
Sense (1/1)
Sharing (1/4)
Silence (1/4)
Sincerity (1/7)
Sleep (1/2)
Smiling (1/1)
Smoking (1/2)
Social identity (1/59)
Sorrow (1/2)
Spirit (1/7)
Sport (1/5)
Statistics (1/1)
Synthesis (1/1)
Temptation (1/6)
Traditions (1/4)
Travelling (1/4)
Usefulness (1/3)
Watching (1/1)
Welfare (1/1)
World (1/5)
World improvement (1/2)
Youth (1/6)
Adultery (0/6)
Aesthetics (0/3)
Apparence (0/8)
Approval (0/2)
Beginning (0/1)
Bible (0/1)
Biographies (0/1)
Blame (0/1)
Bourgeoisie (0/1)
Brothers (0/1)
Calmness (0/1)
Calumny (0/2)
Career (0/3)
Chastity (0/2)
Cheating (0/1)
Cinema (0/2)
Clothing (0/1)
Common sense (0/2)
Confidence (0/4)
Contempt (0/1)
Coyness (0/3)
Critics (0/1)
Dignity (0/1)
Drugs (0/1)
Eating (0/2)
Elegance (0/1)
Empathy (0/0)
End of the world (0/2)
Enemies (0/6)
English people (0/1)
Enthusiasm (0/1)
Escape (0/1)
Etiquette (0/1)
Euthanasia (0/1)
Fame (0/5)
Fascination (0/2)
Faults (0/3)
Finance (0/1)
Forgetting (0/1)
Games (0/1)
Greed (0/1)
Hatred (0/12)
Heroism (0/2)
Human quality (0/3)
Hunger (0/6)
Hypocrisy (0/3)
Improvement (0/1)
Instinct (0/1)
Introversion (0/4)
Intuition (0/1)
Italians (0/5)
Italy (0/3)
Jealousy (0/1)
Lawyers (0/1)
Litigation (0/1)
Luxury (0/1)
Manners (0/1)
Market (0/2)
Mass (0/34)
Misfortune (0/4)
Misogyny (0/1)
Naivety (0/2)
Narcissism (0/2)
Nationalism (0/1)
Neighbors (0/1)
Obscurantism (0/1)
Occultism (0/1)
Offending (0/2)
Opportunism (0/1)
Order (0/2)
Originality (0/1)
Overreaching (0/1)
Police (0/2)
Prayer (0/1)
Pride (0/5)
Probability (0/1)
Prostitution (0/1)
Providence (0/1)
Psychotherapists (0/7)
Purity (0/2)
Quitting (0/1)
Relatives (0/1)
Relativism (0/1)
Repenting (0/1)
Research (0/1)
Respect (0/1)
Rights (0/1)
Roles (0/8)
Self-improvement (0/9)
Sensations (0/2)
Seriosity (0/1)
Shyness (0/2)
Social ladder (0/1)
Socializing (0/7)
Sociology (0/5)
Solidarity (0/1)
Speed (0/1)
Spontaneity (0/2)
Style (0/1)
Sublime (0/1)
Superficiality (0/3)
Superstition (0/1)
Taxes (0/1)
Theater (0/3)
To be organized (0/164)
Tragedy (0/1)
Triviality (0/1)
Ugliness (0/4)
Vengeance (0/3)
Verbosity (0/5)
Vice (0/2)
Virginity (0/1)
Visions (0/1)
Weakness (0/3)
Wickedness (0/2)
Witches (0/1)
Worrying (0/1)
Worthiness (0/1)
Subjects: 452 in alphabetic order Show in order of recurrence
Ability (3/8)
Action (4/5)
Adaptation (2/4)
Admiration (1/4)
Adultery (0/6)
Advertising (1/2)
Advicing (1/6)
Aesthetics (0/3)
Ageing (9/24)
Aiming (1/1)
Ambition (2/7)
America (1/1)
Anarchy (1/3)
Anger (3/8)
Animals (3/5)
Aphorisms (2/25)
Apology (1/1)
Apparence (0/8)
Appreciation (3/4)
Approval (0/2)
Architecture (1/3)
Arguing (1/3)
Art (11/57)
Atheism (6/15)
Attention (27/30)
Authority (3/4)
Beauty (8/54)
Beginning (0/1)
Behaviour (1/2)
Beliefs (5/16)
Bible (0/1)
Bigotry (1/1)
Biographies (0/1)
Blame (0/1)
Books (6/20)
Boredom (3/8)
Bourgeoisie (0/1)
Brothers (0/1)
Burocracy (2/3)
Business (5/8)
Calmness (0/1)
Calumny (0/2)
Capitalism (1/2)
Career (0/3)
Catastrophe (1/1)
Celebrity (1/1)
Censorship (2/4)
Chance (2/23)
Changing (26/96)
Character (1/3)
Charity (1/3)
Chastity (0/2)
Cheating (0/1)
Children (3/16)
Choice (3/26)
Cinema (0/2)
Civilization (5/8)
Clothing (0/1)
Commitment (1/1)
Common sense (0/2)
Communication (4/32)
Communism (3/4)
Competition (2/9)
Computer (4/7)
Confidence (0/4)
Conformism (12/46)
Consciousness (9/30)
Contempt (0/1)
Conversation (2/10)
Conviction (1/1)
Cooking (1/1)
Cooperation (1/1)
Courage (2/19)
Cowardice (1/3)
Coyness (0/3)
Creativity (4/22)
Crime (4/5)
Criticism (4/18)
Critics (0/1)
Crying (1/3)
Culture (4/24)
Cynism (3/5)
Death (17/61)
Deception (2/6)
Democracy (7/11)
Desire (1/4)
Desperation (1/1)
Destiny (1/6)
Destruction (1/1)
Devil (1/3)
Dignity (0/1)
Diplomacy (2/3)
Discipline (1/2)
Disobedience (1/6)
Doubting (4/14)
Dreaming (4/11)
Drinking (4/4)
Drugs (0/1)
Duty (1/9)
Eating (0/2)
Ecology (3/11)
Economy (6/13)
Education (23/35)
Effectiveness (1/1)
Efficiency (1/2)
Egotism (1/11)
Elegance (0/1)
Emotions (2/8)
Empathy (0/0)
End of the world (0/2)
Enemies (0/6)
English people (0/1)
Enthusiasm (0/1)
Envy (1/13)
Equality (3/8)
Error (2/18)
Escape (0/1)
Eternity (1/1)
Ethics (9/84)
Etiquette (0/1)
Euthanasia (0/1)
Evil (3/20)
Evolution (8/14)
Excellence (1/2)
Experience (3/8)
Facts (2/4)
Failure (7/9)
Faith (10/17)
Faithfulness (1/7)
Faking (1/5)
Fame (0/5)
Family (2/7)
Fantasy (1/3)
Fascination (0/2)
Fashion (1/6)
Fault (2/5)
Faults (0/3)
Fear (15/46)
Feelings (14/77)
Feminism (1/1)
Fighting (2/2)
Finance (0/1)
Food (3/5)
Fools (1/1)
Forgetting (0/1)
Forgiving (1/6)
Freedom (26/136)
Friendliness (1/2)
Friendship (6/34)
Fun (2/3)
Future (10/24)
Games (0/1)
Generations (1/1)
Generosity (4/15)
Genius (4/21)
Glory (2/3)
Goals (4/8)
God (22/88)
Good and Evil (2/19)
Good breeding (1/1)
Gossip (2/3)
Government (7/12)
Gratitude (1/6)
Greed (0/1)
Growing (3/4)
Habit (1/7)
Happiness (16/154)
Harm (1/1)
Hatred (0/12)
Health (1/2)
Hell (1/6)
Help (1/2)
Heroism (0/2)
Hierarchy (1/7)
History (11/28)
Honesty (2/8)
Honour (3/5)
Hope (14/35)
Hospitality (2/2)
Human differences (6/58)
Human nature (14/189)
Human quality (0/3)
Human relations (10/333)
Human types (1/2)
Human values (8/25)
Humility (2/9)
Humour (31/74)
Hunger (0/6)
Hypocrisy (0/3)
Idealism (3/4)
Ideals (2/3)
Ideas (3/19)
Ideologies (1/2)
Idleness (2/5)
Ignorance (8/20)
Illness (1/5)
Illusion (5/26)
Imagination (6/27)
Immortality (1/2)
Improvement (0/1)
Indifference (2/8)
Indignation (1/1)
Individualism (1/1)
Information (4/18)
Information technology (6/11)
Innocence (1/2)
Innovation (2/2)
Instinct (0/1)
Intellectuals (1/7)
Intelligence (11/79)
Interactions (1/38)
Internet (2/6)
Introversion (0/4)
Intuition (0/1)
Invention (4/5)
Italians (0/5)
Italy (0/3)
Jealousy (0/1)
Jokes (8/16)
Journalism (2/6)
Joy (1/3)
Judging (9/65)
Justice (3/21)
Kindness (1/3)
Kissing (1/2)
Knowledge (59/361)
Language (11/39)
Laughing (7/13)
Law (6/18)
Lawyers (0/1)
Laziness (1/4)
Leadership (3/19)
Learning (6/49)
Life (33/139)
Life and Death (6/25)
Listening (4/5)
Literature (1/14)
Litigation (0/1)
Logics (4/14)
Loss (1/1)
Love (42/239)
Luck (2/9)
Luxury (0/1)
Lying (4/46)
Madness (13/62)
Man & Animals (4/5)
Management (11/14)
Mankind (22/82)
Manners (0/1)
Market (0/2)
Marketing (1/1)
Marriage (29/99)
Martyrdom (1/4)
Mass (0/34)
Mathematics (1/5)
Maxims (1/2)
Medicine (1/7)
Mediocrity (4/29)
Melancholy (1/1)
Memories (1/4)
Memory (3/20)
Men and Women (4/20)
Middle Ages (1/1)
Militarism (1/1)
Mind (63/244)
Misanthropy (1/14)
Miscellaneous (552/2141)
Misfortune (0/4)
Misogyny (0/1)
Money (4/35)
Moralism (1/4)
Morality (14/35)
Motivations (4/127)
Music (6/22)
Mysticism (1/2)
Naivety (0/2)
Narcissism (0/2)
Nationalism (0/1)
Nations (1/1)
Nature (7/24)
Neighbors (0/1)
Neutrality (2/2)
Normality (1/2)
Obedience (1/72)
Objectivity (1/2)
Obscurantism (0/1)
Occultism (0/1)
Offending (0/2)
Opinions (1/4)
Opportunism (0/1)
Optimism (1/7)
Order (0/2)
Organization (3/6)
Originality (0/1)
Overreaching (0/1)
Pain (1/10)
Parents (2/6)
Passion (2/5)
Past (1/5)
Patience (1/5)
Peace (4/9)
People (1/11)
Perception (10/22)
Perfection (4/6)
Perfectionism (1/2)
Personality (3/14)
Pessimism (1/5)
Philosophy (15/126)
Photography (1/3)
Playing (3/5)
Pleasure (2/19)
Poetry (4/23)
Police (0/2)
Politics (28/160)
Possession (3/7)
Poverty (4/10)
Power (3/14)
Prayer (0/1)
Prejudice (2/30)
Presumption (1/7)
Pride (0/5)
Principles (2/3)
Probability (0/1)
Problems and solutions (7/24)
Procreation (1/1)
Progress (7/22)
Prostitution (0/1)
Providence (0/1)
Psychiatry (1/3)
Psychology (29/231)
Psychotherapists (0/7)
Public property (1/1)
Punishment (1/2)
Purity (0/2)
Questions (3/10)
Quitting (0/1)
Quotations (3/3)
Racism (1/2)
Rationality (4/11)
Reading (8/19)
Reality (5/18)
Reason (7/61)
Reason and Feeling (3/14)
Relatives (0/1)
Relativism (0/1)
Religion (138/415)
Repenting (0/1)
Reputation (1/2)
Research (0/1)
Respect (0/1)
Responsibility (12/25)
Revolutions (3/9)
Rich and Poor (1/3)
Richness (3/11)
Ridicule (2/5)
Rights (0/1)
Risk (1/1)
Roles (0/8)
Sacrifice (1/1)
Sadness (2/4)
Safety (1/1)
School (2/6)
Science (16/49)
Secrets (1/7)
Self-control (3/8)
Self-esteem (1/9)
Self-improvement (0/9)
Self-knowledge (4/10)
Sensations (0/2)
Sense (1/1)
Seriosity (0/1)
Sex (9/49)
Shame (2/7)
Sharing (1/4)
Shyness (0/2)
Silence (1/4)
Simplicity (3/7)
Sincerity (1/7)
Sleep (1/2)
Smiling (1/1)
Smoking (1/2)
Social identity (1/59)
Social ladder (0/1)
Socializing (0/7)
Society (6/64)
Sociology (0/5)
Solidarity (0/1)
Solitude (9/127)
Sorrow (1/2)
Speed (0/1)
Spirit (1/7)
Spontaneity (0/2)
Sport (1/5)
Statistics (1/1)
Stupidity (17/78)
Style (0/1)
Sublime (0/1)
Success (14/31)
Suffering (2/8)
Suicide (3/30)
Superficiality (0/3)
Superstition (0/1)
Synthesis (1/1)
Tact (2/3)
Talent (2/4)
Talking (14/31)
Taste (3/7)
Taxes (0/1)
Teaching (5/15)
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Theory (5/10)
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5 quotes
4337E


Theory is when we know everything but nothing works. Praxis is when everything works but we do not know why. We always end up by combining theory with praxis: nothing works and we do not know why.


Theory
Theory
2847E

In theory, there is no difference between theory and practice. But, in practice, there is.

Theory
Theory
12573E

Modern theory is about objects lower than man; even stars, being common things, are lower than man.

Theory
Theory
3219E

It is a capital mistake to theorize before one has data. Insensibly one begins to twist facts to suit theories, instead of theories to suit facts.

Theory
Theory
5 quotes
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