Blinding ignorance does mislead us. O! Wretched mortals, open your eyes!

The first object of the painter is to make a flat plane appear as a body in relief and projecting from that plane

life without love, is no life at all

Make your work to be in keeping with your purpose

All our knowledge has its origins in our perceptions.

The motions of men must be such as suggest their dignity or their baseness.

All our knowledge hast its origins in our perceptions … In nature there is no effect without a cause … Experience never errs; it is only your judgments that err by promising themselves effects such as are not caused by your experiments … Science is the observation of things possible, whether present or past; prescience is the knowledge of things which may come to pass.