More trouble is caused in this world by indiscreet answers than by indiscreet questions.

Skepticism is not an end in itself; it is a tool for the discovery of truths.

All our efforts to attain immortality-by statesmanship, by conquest, by science or the arts-are equally vain in the long run, because the long run is longer than any of us can imagine.

As long as there are human beings, there will be the idea of brotherhood -- and an almost total inability to practice it.

Genealogy: A perverse preoccupation of those who seek to demonstrate that their forebears were better people than they are.

It wants to be, and proclaims itself to be, 'the greatest', but greatness is not required of a country; only goodness is.

The difference between patriotism and nationalism is that the patriot is proud of his country for what it does, and the nationalist is proud of his country no matter what it does; the first attitude creates a feeling of responsibility, but the second a feeling of blind arrogance that leads to war.