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able appear attraction blue bodies calculus Cambridge cause centre colours communicated consequence considered contained continued curves dated death determine direction discovered discoveries distance doctrine doubt earth East Lothian equal experiment explain express fact force give given glass gravity heat important inquiries invention labours Leibnitz letter light London manuscript mathematical matter means method mind moon motion nature never object observations obtained opinion Optics orbit original particles pass person philosopher planets plate possession present Principia principles prism produced published rays reason received referred reflected refraction remarkable respecting Royal Society says seems seen Sir Isaac Newton space spectrum supposed surface telescope theory thing thought tion transmitted true truth views writings written yellow
Page 300 - I do not know what I may appear to the world, but to myself I seem to have been only like a boy playing on the sea -shore, and diverting myself in now and then finding a smoother pebble or a prettier shell than ordinary, whilst the great ocean of truth lay all undiscovered before me.
Page 251 - He gave this and the Prophecies of the Old Testament, not to gratify men's curiosities by enabling them to foreknow things, but that after they were fulfilled they might be interpreted by the event, and his own Providence, not the Interpreters, be then manifested thereby to the world.
Page 78 - ... that the ratio of the sines of the angles of incidence and refraction is constant for refraction in the same medium, was effected by Snell and Descartes.
Page 139 - I only hint at present to such as have ability and opportunity of prosecuting this inquiry, and are not wanting of industry for observing and calculating, wishing heartily such may be found, having myself many other things in hand, which I would first complete, and therefore cannot so well attend it. But this I...
Page 248 - This language is taken from the analogy between the world natural and an empire or kingdom considered as a world politic. Accordingly, the whole world natural, consisting of heaven and earth, signifies the whole world politic, consisting of thrones and people; or so much of it as is considered in the prophecy.
Page 211 - I am extremely troubled at the embroilment I am in, and have neither ate nor slept well this twelvemonth, nor have my former consistency of mind. I never designed to get anything by your interest, nor by King James's favour, but am now sensible that I must •withdraw from your acquaintance, and see neither you nor the rest of my friends any more, if I may but leave them quietly.
Page 256 - WHEN I wrote my treatise about our system, I had an eye upon such principles as might work with considering men for the belief of a Deity ; and nothing can rejoice me more than to find it useful for that purpose.
Page 149 - I must again beg you," says he, "not to let your resentments run so high as to deprive us of your third book, wherein your applications of your mathematical doctrine to the theory of comets, and several curious experiments which, as I guess by what you write ought to compose it, will undoubtedly render it acceptable to those who will call themselves philosophers without mathematics, which are much the greater number.
Page 246 - I should be glad to have your judgment upon some of my mystical fancies. The Son of man, Dan. vii. I take to be the same with the Word of God upon the White Horse in Heaven, Apoc. xix. and him to be the same with the Man Child, Apoc. xii. for both are to rule the nations with a rod of iron ; but whence are you certain that the Ancient of Days is Christ?