The function of muscle is to pull and not to push, except in the case of the genitals and the tongue.

A beautiful body perishes, but a work of art dies not.

The merit of painting lies in the exactness of reproduction. Painting is a science and all sciences are based on mathematics. No human inquiry can be a science unless it pursues its path through mathematical exposition and demonstration.

We might say that the earth has the spirit of growth; that its flesh is the soil.

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.

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

The knowledge of all things is possible