Only barbarians are not curious about where they come from, how they came to be where they are, where they appear to be going, whether they wish to go there, and if so, why, and if not, why not.
Philosophers are adults who persist in asking childish questions.
Few new truths have ever won their way against the resistance of established ideas save by being overstated.
Liberty for wolves is death to the lambs.
Injustice, poverty, slavery, ignorance - these may be cured by reform or revolution. But men do not live only by fighting evils. They live by positive goals, individual and collective, a vast variety of them, seldom predictable, at times incompatible.
The first people totalitarians destroy or silence are men of ideas and free minds.