We are to admit no more causes of natural things than such as are both true and sufficient to explain their appearances.
Isaac NewtonNature does nothing in vain when less will serve; for Nature is pleased with simplicity and affects not the pomp of superfluous causes.
Isaac NewtonHow came the bodies of animals to be contrived with so much art, and for what ends were their several parts? Was the eye contrived without skill in Opticks, and the ear without knowledge of sounds?...and these things being rightly dispatchโd, does it not appear from phรฆnomena that there is a Being incorporeal, living, intelligent...?
Isaac NewtonThe 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.
Isaac Newton