In art, truth is a means to an end; in science, it is the only end.
Those who have obtained the farthest insight into Nature have been, in all ages, firm believers in God.
It is a test of true theories not only to account for but to predict phenomena.
Fundamental ideas are not a consequence of experience, but a result of the particular constitution and activity of the mind, which is independent of all experience in its origin, though constantly combined with experience in its exercise.
Every failure is a step to success.
The object of science is knowledge; the objects of art are works. In art, truth is the means to an end; in science, it is the only end. Hence the practical arts are not to be classed among the sciences