Men are themselves the source of their own fortune and misfortune.

When I investigate and when I discover that the forces of the heavens and the planets are within ourselves, then truly I seem to be living among the gods.

A man can do all things if he will.

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

Buildings have been made because of man.

Beauty is the adjustment of all parts proportionately so that one cannot add or subtract or change without impairing the harmony of the whole.

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