One must love life before loving its meaning ... yes, and when the love of life disappears, no meaning can console us.

Power is only vouchsafed to the man who dares to stoop and pick it up. There is only one thing, one thing needful: one has only to dare!

Imagine that you are creating a fabric of human destiny with the object of making men happy in the end, giving them peace and rest at last. Imagine that you are doing this but that it is essential and inevitable to torture to death only one tiny creature...in order to found that edifice on its unavenged tears. Would you consent to be the architect on those conditions? Tell me. Tell the truth.

One can know a man from his laugh, and if you like a man's laugh before you know anything of him, you may confidently say that he is a good man.

One could never judge a man without seeing him close, for oneself.

To strive consciously for an object and to engage in engineering -- that is, incessantly and eternally to make new roads, wherever they may lead.

Two and two make four. Nature doesn't ask your advice. She isn't interested in your preferences or whether or not you approve of her laws. You must accept nature as she is with all the consequences that that implies.