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.

We account the Scriptures of God to be the most sublime philosophy.

Physics, beware of metaphysics.

The best and safest way of philosophising seems to be, first to enquire diligently into the properties of things, and to establish those properties by experiences [experiments] and then to proceed slowly to hypotheses for the explanation of them. For hypotheses should be employed only in explaining the properties of things, but not assumed in determining them; unless so far as they may furnish experiments.

Poetry is a kind of ingenious nonsense.

In the absence of any other proof, the thumb alone would convince me of God's existence.

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.