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Is there any knowledge in the world that is so certain that no reasonable man could doubt it?

Bertrand Russell

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

Danger Man Myself Religion
Man is a credulous animal, and must believe something; in the absence of good grounds for belief, he will be satisfied with bad ones.
BERTRAND RUSSELL

Absence Animal Believe Man Philosophy Satisfaction
To be able to fill leisure intelligently is the last product of civilization, and at present, very few people have reached this level.
BERTRAND RUSSELL

Intelligence Prepare Present
Conquer the world by intelligence, and not merely by being slavishly subdued by the terror that comes from it.
BERTRAND RUSSELL

Deep Intelligence World
A happy life must be to a great extent a quiet life, for it is only in an atmosphere of quiet that true joy can live.
BERTRAND RUSSELL

Greatness Happiness Live Quiet True
The demand for certainty is one that is natural to man but is nevertheless an intellectual vice.
BERTRAND RUSSELL

Man Philosophy
The whole problem with the world is that fools and fanatics are always so certain of themselves, and wiser people so full of doubts.
BERTRAND RUSSELL

Doubt Problem Wisdom World
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
Fear is the parent of cruelty, and therefore it is no wonder if cruelty and religion have gone hand in hand.
BERTRAND RUSSELL

Deep Fear Hands Religion
I say quite deliberately that the Christian religion, as organized in its churches, has been and still is the principal enemy of moral progress in the world.
BERTRAND RUSSELL

Enemy Quite Religion World
Life is nothing but a competition to be the criminal rather than the victim.
BERTRAND RUSSELL

Crime Deep Life Philosophy Reality
The greatest challenge to any thinker is stating the problem in a way that will allow a solution.
BERTRAND RUSSELL

Greatness Problem Science Thinking
I hate being all tidy like a book in a library where nobody reads – prison is horribly like that.
BERTRAND RUSSELL

Book Hate Reading
Nothing is so exhausting as indecision, and nothing is so futile.
BERTRAND RUSSELL

Decision Deep Philosophy
Every man, wherever he goes, is encompassed by a cloud of comforting convictions, which move with him like flies on a summer day.
BERTRAND RUSSELL

Comfortable Man Philosophy
I believe in using words, not fists. I believe in my outrage knowing people are living in boxes on the street. I believe in honesty. I believe in a good time. I believe in good food. I believe in sex.
BERTRAND RUSSELL

Believe Food Goodness Honesty Live Myself People Sex Word

Is there any knowledge in the world that is so certain that no reasonable man could doubt it?

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Is there any knowledge in the world that is so certain that no reasonable man could doubt it?

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