If you look at a luminous body in the far distance through a smallhole it will seem to grow less, and if you look at it near at hand it will not undergo any change. That is that if you look at this light atadistance of one or two braccia from the aforesaid hole it will not undergo any change whether you are looking at it through this hole or outside of it.

The eye which finds itself in the centre between the shadows and the lights that surround the shaded bodies, will see in these bodies thegreater shadows that are in them meeting themselves within equal angles that is of the visual incidence.

The reason of this is that if you look at the movement of the wateryour eye will not be able to fix on anything, but its action is as that of things seen in your shadow when you are walking; for if the eyeat-tempt to distinguish the nature of the shadow, the wisps of strawor other things contained in it appear of rapid movement and it seems that these are much more swift to flee from the said shadow than the shadow is to proceed.

As a blind man has no idea of colors, so have we no idea of the manner by which the all-wise God perceives and understands all things.

A man searching for paradise lost can seem a fool to those who never sought the other world.

When a man is perfect, he sees perfection in others. When he sees imperfection, it is his own mind projecting itself.