I have been impressed with the urgency of doing. Knowing is not enough; we must apply. Being willing is not enough; we must do.

I have offended God and mankind because my work didn't reach the quality it should have.

The mole has very small eyes and it always lives under ground; and it lives as long as it is in the dark but when it comes into the light it dies immediately, because it becomes known;--and so it is with lies.

Make your faces so that they do not all have the same expression, as one sees with most painters, but give them different expression, according to age, complexion, and good or bad character.

The light and heat of the universe comes from the sun, and its cold and darkness from the withdrawal of the sun.

You grow in reputation like bread in the hands of a child.

The smallest feline is a masterpiece.