A wave is never found alone, but is mingled with as many other waves as there are uneven places in the object where the said wave is produced.

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.

To speak well of a base man is much the same as speaking ill of a good man.

The eye which turns from a white object in the light of the sun and goes into a less fully lighted place will see everything as dark.

Thou, O God, dost sell us all good things at the price of labor.

When you are painting you should take a flat mirror and often look at your work within it, and it will then be seen in reverse, and will appear to be by the hand of some other master, and you will be better able to judge of its faults than in any other way.

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