Isaac Newton Quotes

Gravitation is, so far, not understandable in terms of other phenomena.

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.

And, uh, I did that, and there was nothing more ridiculous to me than finding the weight of the earth because I didn't care how much the earth weighed.

To the Master's honor all must turn, each in its track, without a sound, forever tracing Newton's ground.

Gravitational and electromagnetic interactions are long-range interactions, meaning they act on objects no matter how far they are separated from each other.

I believe there are no questions that science can't answer about a physical universe.

The first amazing fact about gravitation is that the ratio of inertial mass to gravitational mass is constant wherever we have checked it. The second amazing thing about gravitation is how weak it is.

We know there is gravity because apples fall from trees. We can observe gravity in daily life. If we could throw an apple to the edge of the universe, we would observe it accelerating.

Everything every day here on Earth is based on gravity, and you don't realize it until you don't have it anymore.

Some of the best scientists can't explain gravity; Neil Degrasse Tyson, Bill Nye, in the end, do they even know?

I have not been able to discover the cause of those properties of gravity from phenomena, and I frame no hypotheses; for whatever is not deduced from the phenomena is to be called a hypothesis, and hypotheses, whether metaphysical or physical, whether of occult qualities or mechanical, have no place in experimental philosophy.

That is to say, nature's laws are causal; they reveal themselves by comparison and difference, and they operate at every multivariate space/time point.

Even if it turns out that time travel is impossible, it is important that we understand why it is impossible.

In the context of general relativity, space almost is a substance. It can bend and twist and stretch, and probably the best way to think about space is to just kind of imagine a big piece of rubber that you can pull and twist and bend.

The true scientist no longer attempts to disprove the pull of gravity, or the rotation of the earth, or the motion of heavenly bodies, or the sequence of the seasons, or man's need of food and water, or the function of the heart.

You will certainly not doubt the necessity of studying astronomy and physics, if you are desirous of comprehending the relation between the world and Providence as it is in reality, and not according to imagination.

Gravity is one variable in a lot of scientific processes. If you can remove gravity or minimize its effect, then you can understand the other processes that are going on.

The paradigm of physics - with its interplay of data, theory and prediction - is the most powerful in science.

Primary causes are unknown to us; but are subject to simple and constant laws, which may be discovered by observation, the study of them being the object of natural philosophy.

But shall gravity be therefore called an occult cause, and thrown out of philosophy, because the cause of gravity is occult and not yet discovered? Those who affirm this, should be careful not to fall into an absurdity that may overturn the foundations of all philosophy. For causes usually proceed in a continued chain from those that are more compounded to those that are more simple; when we are arrived at the most simple cause we can go no farther ... These most simple causes will you then call occult and reject them? Then you must reject those that immediately depend on them.

Millions saw the apple fall but Newton was the one who asked 'why.'

You think Earth's gravity is really something when you're climbing the stairs. But, as far as physics goes, it is a pipsqueak, infinitesimal, tiny little effect.

But actually theory is very practical. Gravity is a theory, for example. It allows you to predict that if you step off a cliff you will fall; you don't have to collect data on that.

Metaphysical speculation is independent of the physical validity of the Big Bang itself and is irrelevant to our understanding of it.

We all know we fall. Newton's discovery was that the moon falls, too-and by the same rule that we do.