The greater the man's soul, the deeper he loves.

As every divided kingdom falls, so every mind divided between many studies confounds and saps itself.

It is a far worthier thing to read by the light of experience than to adorn oneself with the labors of others.

The Medici made me and the Medici destroyed me.

It's not enough that you believe what you see. You must also understand what you see.

A bird is an instrument working according to mathematical law, which instrument it is within the capacity of man to reproduce with all its movements, but not with a corresponding degree of strength, though it is deficient only in the power of maintaining equilibrium. We may therefore say that such an instrument constructed by man is lacking in nothing except the life of the bird, and this life must needs be supplied from that of man.

Medicine is the restoration of discordant elements.