The eye which sees all objects reversed retains the images for some time.

I am still hopeful. A falcon, Time. But the coincidence is probably accidental.

Supreme happiness will be the greatest cause of misery, and the perfection of wisdom the occasion of folly.

Every man at three years old is half his height.

Test knowledge through experience, be prepared to make mistakes, and be persistent about it.

It is better to imitate ancient than modern work.

I say that the power of vision extends through the visual rays to the surface of non-transparent bodies, while the power possessed by these bodies extends to the power of vision.

For in truth great love is born of great knowledge of the thing loved.

An artist who lacks the power of self-criticism accomplishes but little. It is good if your work stands higher than your own opinion of it; bad if it is on the same level. 68 But it is a great disaster if your work stands lower than your judgment of it.

I shall do down in history as the man who opened a door!