“For man as an historical creature has desires of indeterminate dimensions.”

“Butterflies... not quite birds, as they were not quite flowers, mysterious and fascinating as are all indeterminate creatures”

“History is the long struggle of man, by exercise of his reason, to understand his environment and to act upon it. But the modern period has broadened the struggle in a revolutionary way. Man now seeks to understand, and act on, not only his environment, but himself; and this has added, so to speak, a new dimension to reason and a new dimension to history.”

“Beauty presents an indeterminate concept of Understanding, the sublime an indeterminate concept of Reason.”

“So is man's heart. The desire to perform a work which will endure, which will survive him, is the origin of his superiority over all other living creatures here below. It is this which has established his dominion, and this it is which justifies it, over all the world.”

“Every man and every living creature has a sacred right to the gladness of springtime.”