Fire is to represent truth because it destroys all sophistry and lies; and the mask is for lying and falsehood which conceal truth.

To lie is vile, to tell truth is excellent, if not noble.

To me it seems that those sciences are vain and full of error which are not born of experience, mother of all certainty, first-hand experience which in its origins, or means, or end has passed through one of the five senses.

I have been impressed with the urgency of doing.

He who can copy can do.

Every now and then go away, have a little relaxation, for when you come back to your work your judgment will be surer. Go some distance away because then the work appears smaller and more of it can be taken in at a glance and a lack of harmony and proportion is more readily seen.

You will never have a greater or lesser dominion than that over yourself.