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

Bertrand Russell

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
I believe that when I die I shall rot, and nothing of my ego will survive.
BERTRAND RUSSELL

Believe Death Deep Myself
Dogmatism is the greatest of mental obstacles to human happiness.
BERTRAND RUSSELL

Greatness Happiness Human Mental Obstacle
I would never die for my beliefs because I might be wrong.
BERTRAND RUSSELL

Believe Death Myself Wrong
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
No nation was ever so virtuous as each believes itself, and none was ever so wicked as each believes the other.
BERTRAND RUSSELL

Believe Deep Nation Virtue
The fundamental cause of the trouble is that in the modern world the stupid are cocksure while the intelligent are full of doubt.
BERTRAND RUSSELL

Doubt Fundamental Intelligence World
The secret of happiness is to face the fact that the world is horrible, horrible, horrible.
BERTRAND RUSSELL

Deep Happiness Secret World
If there were in the world today any large number of people who desired their own happiness more than they desired the unhappiness of others, we could have paradise in a few years.
BERTRAND RUSSELL

Desire Happiness People Philosophy World
Three passions, simple but overwhelmingly strong, have governed my life: the longing for love, the search for knowledge, and unbearable pity for the suffering of mankind.
BERTRAND RUSSELL

Knowledge Life Love Passion Search Simplicity Strong Suffering
The wise man thinks about his troubles only when there is some purpose in doing so; at other times he thinks about other things, or, if it is night, about nothing at all.
BERTRAND RUSSELL

Man Night Purpose Thinking Wisdom
The secret of happiness is very simple: let your interests be as wide as possible, and let your reactions to the things and persons that interest you be as far as possible friendly rather than hostile.
BERTRAND RUSSELL

Friendship Happiness Philosophy Secret Yourself
Remember your humanity, and forget the rest.
BERTRAND RUSSELL

Forget Humanity Remember Yourself
The hardest thing to learn in life is which bridge to cross and which to burn.
BERTRAND RUSSELL

Burn Hard Learning Let Go Life
Not to be absolutely certain is, I think, one of the essential things in rationality.
BERTRAND RUSSELL

Myself Philosophy Thinking
Your writing is never as good as you hoped, but never as bad as you feared.
BERTRAND RUSSELL

Fear Goodness Hope Writing Yourself

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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