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Not to be absolutely certain is, I think, one of the essential things in rationality.

Bertrand Russell

There are two motives for reading a book; one, that you enjoy it; the other, that you can boast about it.
BERTRAND RUSSELL

Book Enjoyment Reading
The use of self-control is like the use of brakes on the train. It is useful when you find yourself in the wrong direction but merely harmful when the direction is right.
BERTRAND RUSSELL

Control Direction Harm Wrong Yourself
Love can flourish only as long as it is free and spontaneous; it tends to be killed by the thought of duty. To say that it is your duty to love so-and-so is the surest way to cause you to hate him of her.
BERTRAND RUSSELL

Freedom Hate Kill Love Philosophy Relationship
What is wanted is not the will to believe, but the will to find out, which is the exact opposite.
BERTRAND RUSSELL

Believe Deep Willing
Aristotle maintained that women have fewer teeth than men; although he was twice married, it never occurred to him to verify this statement by examining his wives’ mouths.
BERTRAND RUSSELL

Himself Man Marriage Woman
Science may set limits to knowledge, but should not set limits to imagination.
BERTRAND RUSSELL

Imagination Knowledge Limitation Science
No one ever gossips about the virtues of others.
BERTRAND RUSSELL

Oneself Virtue
The search for something permanent is one of the deepest of the instincts leading men to philosophy.
BERTRAND RUSSELL

Man Philosophy Search
Boredom is therefore a vital problem for the moralist, since at least half the sins of mankind are caused by the fear of it.
BERTRAND RUSSELL

Deep Fear Mankind Problem Sin
Never try to discourage thinking, for you are sure to succeed.
BERTRAND RUSSELL

Success Thinking Try
Love is wise, hatred is foolish.
BERTRAND RUSSELL

Hate Love One Liner Wisdom
Conventional people are roused to fury by departure from convention, largely because they regard such departure as a criticism of themselves.
BERTRAND RUSSELL

Angry Leave People Philosophy
Mathematics rightly viewed possesses not only truth but supreme beauty.
BERTRAND RUSSELL

Beautiful Mathematics Truth View
Even if all the experts agree, they may well be mistaken.
BERTRAND RUSSELL

Mistake Science
I consider the official Catholic attitude on divorce, birth control, and censorship exceedingly dangerous to mankind.
BERTRAND RUSSELL

Danger Man Myself Religion
Patriots always talk of dying for their country but never of killing for their country.
BERTRAND RUSSELL

Death Kill Patriotism Talk

Not to be absolutely certain is, I think, one of the essential things in rationality.

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Not to be absolutely certain is, I think, one of the essential things in rationality.

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