The meaning of things lies not in the things themselves, but in our attitude towards them.

A designer knows he has achieved perfection not when there is nothing left to add, but when there is nothing left to take away.

I know but one freedom, and that is the freedom of the mind.

Charity never humiliated him who profited from it, nor ever bound him by the chains of gratitude, since it was not to him but to God that the gift was made.

The machine does not isolate man from the great problems of nature but plunges him more deeply into them.