A cylinder of air reaching to the top of the atmosphere is of equal weight with a cylinder of water about 33 feet high.

If I am anything, which I highly doubt, I have made myself so by hard work.

Ax: 100 Every thing doth naturally persevere in yt state in wch it is unlesse it bee interrupted by some externall cause, hence... [a] body once moved will always keepe ye same celerity, quantity & determination of its motion.

God is able to create particles of matter of several sizes and figures and perhaps of different densities and forces, and thereby to vary the laws of nature, and make worlds of several sorts in several parts of the Universe.

Physics, beware of metaphysics.

A cylinder of air reaching to the top of the atmosphere is of equal weight with a cylinder of water about 33 feet high.

I have presented principles of philosophy that are not, however, philosophical but strictly mathematical-that is, those on which the study of philosophy can be based. These principles are the laws and conditions of motions and of forces, which especially relate to philosophy.