Painting is possessed of divine power, for not only does it make the absent present, but also makes the dead almost alive.

It is very rarely granted even to Nature herself to produce anything absolutely perfect in every part.

A common error of ignorance is to maintain that what one does not know does not exist.

The Arts are learnt by reason and method; they are mastered by practice.

It was never shameful to learn from any teacher things that are useful to know.

Errors accumulate in the sketch and compound in the model.

Buildings have been made because of man.