One machine can do the work of fifty ordinary men. No machine can do the work of one extraordinary person.
Science is what you know, philosophy is what you don't know.
True science teaches, above all, to doubt and be ignorant.
As far as the laws of mathematics refer to reality, they are not certain; and as far as they are certain, they do not refer to reality.
The machine does not isolate us from the great problems of nature but plunges us more deeply into them.
Five out of four people have problems with fractions.
