“I do not think that this [the universe] can be explained only by natural causes, and are forced to impute to the wisdom and ingenuity of an intelligent.”

Every particle of matter is attracted by or gravitates to every other particle of matter with a force inversely proportional to the squares of their distances.

Atheism is so senseless. When I look at the solar system, I see the earth at the right distance from the sun to receive the proper amounts of heat and light. This did not happen by chance.

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

Gravity explains the motions of the planets, but it cannot explain who sets the planets in motion.

I understood. I have understood. I do understand.

Every action has an equal and opposite reaction.

If I am anything, which I highly doubt, I have made myself so by hard work.

My powers are ordinary. Only my application brings me success.

If I have seen further than others, it is by standing upon the shoulders of giants.

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

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

A man may imagine things that are false, but he can only understand things that are true, for if the things be false, the apprehension of them is not understanding.

Therefore to the same natural effects we must, as far as possible, assign the same causes.

Genius is patience.

Whence arises all that order and beauty we see in the world?

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.

Shallow men believe in luck or in circumstance. Strong men believe in cause and effect.

If the soul is left in darkness sins will be committed. The guilty one is not he who commits the sin, but he who causes the darkness

Love does not cause suffering: what causes it is the sense of ownership, which is love’s opposite.

Anger exceeding limits causes fear and excessive kindness eliminates respect.

Pictures, propagated by motion along the fibers of the optic nerves in the brain, are the cause of vision.

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.

Truth never damages a cause that is just.

Therefore, the causes assigned to natural effects of the same kind must be, so far as possible, the same.