“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.”

Philosophy, from the earliest times, has made greater claims, and achieved fewer results, than any other branch of learning.

No nation was ever so virtuous as each believes itself, and none was ever so wicked as each believes the other.

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

Even if all the experts agree, they may well be mistaken.

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.

You see, we are here, as far as I can tell, to help each other – our brothers, our sisters, our friends, our enemies. That’s to help each other, not hurt each other.

Time is truly the great enemy. It’s not the great healer, it’s the great stealer.

Friends show me what I can do, foes teach me what I should do.

As freely as the firmament embraces the world, or the sun pours forth impartially his beams, so mercy must encircle both friend and foe.

Remove advertising, disable a person or firm from proclaiming its wares and their merits, and the whole of society and of the economy is transformed. The enemies of advertising are the enemies of freedom.

Advertising people who ignore research are as dangerous as generals who ignore decodes of enemy signals.

People crushed by law, have no hopes but from power. If laws are their enemies, they will be enemies to laws; and those who have much hope and nothing to lose, will always be dangerous.

The idea is that that there is no such thing as an external enemy.