Let us eat, drink and satisfy our coarse appetites, but let us keep our souls sacred and apart.

If you ask me what I came into this life to do, I will tell you: I came to live out loud.

Man's highest duty is to protect animals from cruelty.

Nothing develops intelligence like travel.

Truth is on the march, and nothing will stop it.

The fate of animals is of greater importance to me than the fear of appearing ridiculous; it is indissolubly connected with the fate of men.

Did science promise happiness? I do not believe it. It promised truth, and the question is to know if we will ever make happiness with truth.

Governments are suspicious of literature because it is a force that eludes them.

If you shut up truth, and bury it underground, it will but grow.

The only basis for living is believing in life, loving it, and applying the whole force of one's intellect to know it better.

Respectable people... What bastards!

The final tormenting, unanswerable question: what is 'success' in mourning?

Do not put your trust in a bad companion nor even trust an ordinary friend, for if he should get angry with you, he may bring all your secrets to light.

If God does not save men by truth, he certainly will not save them by lies. And if the old gospel is not competent to work a revival, then we will do without the revival.

There are moments when our passions speak and decide for us ... like a fire kindled within our being to which everything else in us is mere fuel.

When we stop learning in our relationship, whether we are studying, playing or whatever we are doing, and merely act from the knowledge we have accumulated, then disorder comes.

I think violence begets violence. I don't think a way to solve any sort of conflict is with violence because nothing ever ends up solved, that way.

Italy is only a geographical expression.

Europe is a molehill. All great empires and revolutions have been on the Orient; six hundred millions live there.

I've got the brains, you've got the looks, let's make lots of money

International unity of the workers is more important than the national.