The best way to understanding is a few good examples.

No old Men (excepting Dr. Wallis) love Mathematicks.

If I had stayed for other people to make my tools and things for me, I had never made anything.

The seed of a tree has the nature of a branch or twig or bud. It is a part of the tree, but if separated and set in the earth to be better nourished, the embryo or young tree contained in it takes root and grows into a new tree.

It seems probable to me that God, in the beginning, formed matter in solid, massy, hard, impenetrable, moveable particles, of such sizes and figures, and with such other properties, and in such proportions to space, as most conduced to the end for which He formed them; and that these primitive particles, being solids, are incomparably harder than any porous bodies compounded of them, even so very hard as never to wear or break in pieces; no ordinary power being able to divide what God had made one in the first creation.

I can calculate the motion of heavenly bodies, but not the madness of people.

Errors are not in the art but in the artificers.