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

Few people can be happy unless they hate some other person, nation, or creed.

Sometimes the hardest thing in life is to know which bridge to cross and which to burn.

It seems to me fundamental dishonesty, and a fundamental treachery to intellectual integrity to hold a belief because you think it’s useful and not because you think it’s true.

The fundamental concept in social science is power, in the same sense in which energy is the fundamental concept in physics.

To be able to fill leisure intelligently is the last product of civilization, and at present, very few people have reached this level.

Dogmatism is the greatest of mental obstacles to human happiness.

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

How much longer is the world willing to endure this spectacle of wanton cruelty?

The fundamental cause of the trouble is that in the modern world the stupid are cocksure while the intelligent are full of doubt.

The only thing that will redeem mankind is cooperation.

To fear love is to fear life, and those who fear life are already 3 parts dead.

It’s easy to fall in love. The hard part is finding someone to catch you.

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

Neither a man nor a crowd nor a nation can be trusted to act humanely or to think sanely under the influence of great fear.

Your writing is never as good as you hoped, but never as bad as you feared.

One of the painful things about our time is that those who feel certainty are stupid, and those with any imagination and understanding are filled with doubt and indecision.

Ah, the prayers of the millions, how they must fight and destroy each other on their way to the throne of God.

Incessant falls teach men to reform, and distress rouses their strength. Life springs from calamity, and death from ease.

When two people meet, each one is changed by the other so you’ve got two new people.

The real voyage of discovery consists not in seeking new landscapes, but in having new eyes.

There are three constants in life, change, choice and principles.

To be free comes not from changing or fixing this world, but from seeing this world as it is and opening the heart in the midst of it.

Intuition is the whisper of the soul.

in today’s world no country can be absolutely independent of another. It is a world of interdependence.