To any action there is always an opposite and equal reaction; in other words, the actions of two bodies upon each other are always equal and always opposite in direction.

This most beautiful system of the sun, planets and comets, could only proceed from the counsel and dominion of an intelligent and powerful Being.

We are to admit no more causes of natural things than such as are both true and sufficient to explain their appearances.

He rules all things, not as the world soul but as the lord of all. And because of his dominion he is called Lord God Pantokrator". For “god" is a relative word and has reference to servants, and godhood is the lordship of God, not over his own body "as is supposed by those for whom God is the world soul', but over servants.

I see I have made my self a slave to Philosophy.

To me there has never been a higher source of earthly honor or distinction than that connected with advances in science.

From what has been said it is also evident, that the Whiteness of the Sun's Light is compounded all the Colours wherewith the several sorts of Rays whereof that Light consists, when by their several Refrangibilities they are separated from one another, do tinge Paper or any other white Body whereon they fall. For those Colours ... are unchangeable, and whenever all those Rays with those their Colours are mix'd again, they reproduce the same white Light as before.