A good question is, of course, the key by which infinite answers can be educed.

The greatest weapons in the conquest of knowledge are an understanding mind and the inexorable curiosity that drives it on.

The whole world might know you and acclaim you, but someone in the past, forever unreachable, forever unknowing, spoils it all.

No sensible decision can be made any longer without taking into account not only the world as it is, but the world as it will be.

Humanists recognize that it is only when people feel free to think for themselves, using reason as their guide, that they are best capable of developing values that succeed in satisfying human needs and serving human interests.

I never considered myself a patriot. I like to think I recognize only humanity as my nation.

To succeed, planning alone is insufficient. One must improvise as well.