Man's external form, marvellously constructed, is not much as compared with the divine soul that dwells inside that structure.

Every part is disposed to unite with the whole, that it may thereby escape from its own incompleteness.

Let not your rage or malice destroy a life.

He who does not understand the supreme certainty of mathematics is wallowing in confusion.

Instrumental or mechanical science is the noblest and above all others, the most useful.

When you are alone you are all your own.

Now do you not see that the eye embraces the beauty of the whole world? It counsels and corrects all the arts of mankind... it is the prince of mathematics, and the sciences founded on it are absolutely certain. It has measured the distances and sizes of the stars it has discovered the elements and their location... it has given birth to architecture and to perspective and to the divine art of painting.