Many will think they may reasonably blame me by alleging that my proofs are opposed to the authority of certain men held in the highest reverence by their inexperienced judgments; not considering that my works are the issue of pure and simple experience.

Reprove your friend in secret and praise him openly.

The Medici created and destroyed me.

We, by our arts may be called the grandsons of God.

That which has no limitations, has no form.

Beyond a doubt truth bears the same relation to falsehood as light to darkness.

Just as courage imperils life, fear protects it.