Grown-ups never understand anything for themselves, and it is tiresome for children to be always and forever explaining things to them.
It is only with the heart that one can see rightly; what is essential is invisible to the eye.
Whoever loves above all the approach of love will never know the joy of attaining it.
Each man must look to himself to teach him the meaning of life. It is not something discovered: it is something moulded.
Perfection is finally attained not when there is no longer anything to add but when there is no longer anything to take away, when a body has been stripped down to its nakedness.
The machine does not isolate man from the great problems of nature but plunges him more deeply into them.
The aeroplane has unveiled for us the true face of the earth.
Only the unknown frightens men. But once a man has faced the unknown, that terror becomes the known.
Love does not consist in gazing at each other but in looking together in the same direction.
The injustice of defeat lies in the fact that its most innocent victims are made to look like heartless accomplices. It is impossible to see behind defeat, the sacrifices, the austere performance of duty, the self-discipline and the vigilance that are there—those things the god of battle does not take account of.