Isaac Newton Quotes




What goes up must come down.Isaac Newton

The proper method for inquiring after the properties of things is to deduce them from experiments.Isaac Newton

If anyone offers conjectures about the truth of things from the mere possibility of hypotheses, I do not see by what stipulation anything certain can be determined in any science, since one or another set of hypotheses may always be devised which will appear to supply new difficulties.Isaac Newton

Plato is my friend; Aristotle is my friend, but my greatest friend is truth.Isaac Newton

If the experiments which I urge be defective, it cannot be difficult to show the defects; but if valid, then by proving the theory, they must render all objections invalid.Isaac Newton




The centre of the system of the world is immovable.Isaac Newton

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

If I have done the public any service, it is due to my patient thought.Isaac Newton

Genius is patience.Isaac Newton

Are not rays of light very small bodies emitted from shining substances?Isaac Newton




As a blind man has no idea of colors, so have we no idea of the manner by which the all-wise God perceives and understands all things.Isaac Newton

Fidelity and allegiance sworn to the King is only such a fidelity and obedience as is due to him by the law of the land; for were that faith and allegiance more than what the law requires, we would swear ourselves slaves and the King absolute; whereas, by the law, we are free men, notwithstanding those oaths.Isaac Newton

‘God’ is a relative word and has a respect to servants, and ‘Deity’ is the dominion of God, not over his own body, as those imagine who fancy God to be the soul of the world, but over servants.Isaac Newton

Hypotheses should be subservient only in explaining the properties of things but not assumed in determining them, unless so far as they may furnish experiments.Isaac Newton

I do not love to be printed on every occasion, much less to be dunned and teased by foreigners about mathematical things or to be thought by our own people to be trifling away my time about them when I should be about the king’s business.Isaac Newton

I have explained the phenomena of the heavens and of our sea by the force of gravity, but I have not yet assigned a cause to gravity.Isaac Newton

I there represent that I sent notice of my method to Mr. Leibnitz before he sent notice of his method to me, and left him to make it appear that he had found his method before the date of my letter.Isaac Newton

If a projectile were deprived of the force of gravity, it would not be deflected toward the earth but would go off in a straight line into the heavens and do so with uniform motion, provided that the resistance of the air were removed.Isaac Newton

In experimental philosophy, we are to look upon propositions inferred by general induction from phenomena as accurately or very nearly true, notwithstanding any contrary hypotheses that may be imagined, till such time as other phenomena occur by which they may either be made more accurate or liable to exceptions.Isaac Newton

In the beginning of the year 1665, I found the method of approximating series and the rule for reducing any dignity of any binomial into such a series.Isaac Newton

Infinites, when considered absolutely without any restriction or limitation, are neither equal nor unequal, nor have any certain proportion one to another, and therefore, the principle that all infinites are equal is a precarious one.Isaac Newton

It is indeed a matter of great difficulty to discover, and effectually to distinguish, the true motions of particular bodies from the apparent because the parts of that immovable space, in which those motions are performed, do by no means come under the observation of our senses.Isaac Newton

It is reasonable that forces directed toward bodies depend on the nature and the quantity of matter of such bodies, as happens in the case of magnetic bodies.Isaac Newton

Just as the system of the sun, planets and comets is put in motion by the forces of gravity, and its parts persist in their motions, so the smaller systems of bodies also seem to be set in motion by other forces and their particles to be variously moved in relation to each other and, especially, by the electric force.Isaac Newton

Nothing can be divided into more parts than it can possibly be constituted of. But matter (i.e. finite) cannot be constituted of infinite parts.Isaac Newton