We cannot command Nature except by obeying her.

For many parts of Nature can neither be invented with sufficient subtlety, nor demonstrated with sufficient perspicuity, nor accommodated unto use with sufficient dexterity, without the aid and intervening of the mathematics, of which sort are perspective, music, astronomy, cosmography, architecture, engineery, and divers others.

He that hath knowledge spareth his words.

The first question concerning the Celestial Bodies is whether there be a system, that is whether the world or universe compose together one globe, with a center, or whether the particular globes of earth and stars be scattered dispersedly, each on its own roots, without any system or common center.

There is little friendship in the world, and least of all between equals.

I think I tend to destroy the better paintings, or those that have been better to a certain extent. I try and take them further, and they lose all their qualities, and they lose everything. I think I would say that I destroy all the better paintings.

Brutes by their natural instinct have produced many discoveries, whereas men by discussion and the conclusions of reason have given birth to few or none.