In scientific thought, the concept functions all the better for being cut off from all background images. In its full exercise, the scientific concept is free from all the delays of its genetic evolution, an evolution which is consequently explained by simple psychology. The virility of knowledge increases with each conquest of the constructive abstraction.

One must always maintain one's connection to the past and yet ceaselessly pull away from it. To remain in touch with the past requires a love of memory. To remain in touch with the past requires a constant imaginative effort.

Love is never finished expressing itself, and it expresses itself better the more poetically it is dreamed.

One must always maintain one's connection to the past and yet ceaselessly pull away from it.

It is a poor reverie which invites a nap. One must even wonder whether, in this "failing asleep", the subconscious itself does not undergo a decline in being.

Ideas are refined and multiplied in the commerce of minds. In their splendor, images effect a very simple communion of souls.

When the image is new, the world is new.