Are wars... anything but the means whereby a nation's problems are set, where creation is stimulated - there you have adventure. But there is no adventure in heads-or-tails, in betting that the toss will come out of life or death. War is not an adventure. It is a disease. It is like typhus.

When we think that the machine will harm man, then it is perhaps because we are not yet capable of judging the rapid changes it has brought about. We hardly feel at home in this landscape of mines and power stations. We have just moved into this new home that we have not even finished yet. Everything around us has changed so fast - personal relations, working conditions, habits. Even our state of mind is in turmoil.

"Men have forgotten this truth," said the fox. "But you must not forget it. You become responsible, forever, for what you have tamed."

The airplane has unveiled for us the true face of the earth.

Grown-ups never understand anything for themselves, and it is tiresome for children to be always and forever explaining things to them.

Of what worth are convictions that bring not suffering?

The first stars tremble as if shimmering in green water. Hours must pass before their glimmer hardens into the frozen glitter of diamonds. I shall have a long wait before I witness the soundless frolic of the shooting stars. In the profound darkness of certain nights I have seen the sky streaked with so many trailing sparks that it seemed to me a great gale must be blowing through the outer heavens.