To save the world is the simplest thing in the world. All one has to do is think.

To send a child to rot in the prison of Cuba for the alleged sake of his own well-being is criminal hypocrisy.

The worse the coming future, the more it should motivate its opponents.

What one needs to know in order to appraise a man morally is not: what did his mother say or do when he was three? The proper question is: what does he say and do now?

The more you learn, if you learn it properly, the more clear you become and the more you know.

Each man must reach his own verdict, by weighing all the relevant evidence.

The unphilosophical majority among men are the ones most helplessly dependent on their era‘s dominant ideas.