Innovation is not the product of logical thought, even though the final product is tied to a logical structure.

Persistence is the most powerful force on earth, it can move mountains.

The greatest activity of which man is capable: Opening up yet another fragment of the frontier of beauty.

Is it not better for a man to die for a cause in which he believes, such as peace, than to suffer for a cause in which he does not believe, such as war?

Why does this magnificent applied science which saves work and makes life easier bring us so little happiness? ... The simple answer runs: 'Because we have not yet learned to make sensible use of it.'

Arrows of hate have been aimed at me too, but they have never hit me, because somehow they belonged to another world with which I have no connection whatsoever.

A single bomb of this type, carried by boat and exploded in a port, might very well destroy the whole port, together with some of the surrounding territory.