A science which hesitates to forget its founders is lost.

Error is the price we pay for progress.

Now in creative thought common sense is a bad master. Its sole criterion for judgement is that the new ideas shall look like the old ones. In other words it can only work by suppressing originality.

Art heightens the sense of humanity. It gives an elation to feeling which is supernatural...A million sunsets will not spur us on towards civilization. It requires Art to evoke into consciousness the finite perfections which lie ready for human achievement.

To see what is general in what is particular, and what is permanent in what is transitory, is the aim of scientific thought.

Great dreamers' dreams are never fulfilled, they are always transcended.

Rightness of limitation is essential for growth of reality.