The history of science shows that theories are perishable. With every new truth that is revealed we get a better understanding of Nature and our conceptions and views are modified.

To realize that you do not understand is a virtue; Not to realize that you do not understand is a defect.

Science never solves a problem without creating ten more.

Science has not yet taught us if madness is or is not the sublimity of the intelligence.

For greed all nature is too little.

It is a curious historical fact that modern quantum mechanics began with two quite different mathematical formulations: the differential equation of Schroedinger and the matrix algebra of Heisenberg. The two apparently dissimilar approaches were proved to be mathematically equivalent.

Physics has a history of synthesizing many phenomena into a few theories.

I don’t understand why or how we can bully each other.

It now appears that the way the universe began can indeed be determined, using imaginary time.

Man is by nature a political animal.

I had no talent for science. What was infinitely worse: all my fraternity brothers were engineers.

When we believe the best of people, we let go of each thing they do that is hurtful to us. And we choose to think things like, ‚I don’t believe they meant to hurt me.‘ ‚Maybe they’re having a bad day or don’t feel well.‘ ‚They probably don’t even realize how they sound.‘

Extinction is the rule. Survival is the exception.

What goes on inside a star is better understood than one might guess from the difficulty of having to look at a little dot of light through a telescope, because we can calculate what the atoms in the stars should do in most circumstances.

The woods are lovely, dark and deep. But I have promises to keep, and miles to go before I sleep.

Those who have a true understanding of America know that we have no desire for territorial expansion, for economic or other domination of other peoples. Such purposes are repugnant to our ideals of human freedom.

If you don’t understand the details of your business you are going to fail.

I don’t want to get into it, but if you know someone, it doesn’t mean you agree with everything they say or they do.

Nothing exists from whose nature some effect does not follow.

In much of society, research means to investigate something you do not know or understand.

Freedom is absolutely necessary for the progress in science and the liberal arts.

If you really want to know what Middle-earth is based on, it’s my wonder and delight in the earth as it is, particularly the natural earth.

Before we understand science, it is natural to believe that God created the universe.

I need physics more than friends.

I walk every day, and I look at the mountains and the fields and the small city, and I say: ‚Oh my God, what a blessing.‘ Then you realise it’s important to put it in a context beyond this woman, this man, this city, this country, this universe.

I let the dog out, or I let him in, and we talk some. I let him know I like him, and he lets me know he likes me.

What you guys want, I’m for.

Theories are always very thin and insubstantial, experience only is tangible.

Walking is man’s best medicine.

Meditation demands an astonishingly alert mind; it is the understanding of the totality of life in which every form of fragmentation has ceased.

Why a four-year-old child could understand this report. Run out and find me a four-year-old child. I can’t make head nor tail out of it.

If a man walks in the woods for love of them half of each day, he is in danger of being regarded as a loafer. But if he spends his days as a speculator, shearing off those woods and making the earth bald before her time, he is deemed an industrious and enterprising citizen.

Some people mistakenly think nature is very nice and benevolent and never betrays.

I particularly admire are Mark Twain and Jerome K. Jerome who wrote in a certain tone of voice which was humane and understanding of humanity, but always ready to annotate its little foibles. I think I’d lay my cards down on that, and say that it’s that that I’m trying to do.

And yet it moves.

The best place to find God is in a garden. You can dig for him there.

No matter how much cats fight, there always seem to be plenty of kittens.

We have communion with Christ in His thoughts, views, and purposes; for His thoughts are our thoughts according to our capacity and sanctity. Believers take the same view of matters as Jesus does; that which pleases Him pleases them, and that which grieves His grieves them also.

I have lived long enough to satisfy both nature and glory.

Nature is full of genius, full of the divinity; so that not a snowflake escapes its fashioning hand.

Science is but an image of the truth.

It is the flash which appears, the thunderbolt will follow.

Ignorant kindness may have the effect of cruelty; but to be angry with it as if it were direct cruelty would be an ignorant unkindness.

I try to speak plainly so that my constituents who don’t follow the nuances of government like I do, because they’re too busy earning a real living, can understand the issues before me. None of this stuff is brain surgery.

It’s a tragedy, in a way, that Americans are brought up to think that they cannot feel for other people and other beings just because they are different. They think they’re different. It’s very limiting.

It is written on the arched sky; it looks out from every star. It is the poetry of Nature; it is that which uplifts the spirit within us.

One may understand the cosmos, but never the ego; the self is more distant than any star.

The church saves sinners, but science seeks to stop their manufacture.

People take different roads seeking fulfillment and happiness. Just because they’re not on your road doesn’t mean they’ve gotten lost.

Necessity is the mistress and guide of nature. Necessity is the theme and inventress of nature, her curb and her eternal law.

For a tear is quickly dried, especially when shed for the misfortunes of others.

We are by nature observers, and thereby learners. That is our permanent state.

My brother and I were both good at science, and we were both good at English literature. Either one of us could have gone either way.

You carry Mother Earth within you. She is not outside of you. Mother Earth is not just your environment.

I never wanted to be a scientist per se. I wanted to be a naturalist.

The progress of rivers to the ocean is not so rapid as that of man to error.

Could a greater miracle take place than for us to look through each other’s eyes for an instant?

The second time around, I’ll understand that, as a husband, my wife doesn’t care about my opinions. I just need to tell her the things that will continue to help me stack the brownie points.

Solitary trees, if they grow at all, grow strong.

I’ve always been very one-sided about science, and when I was younger, I concentrated almost all my effort on it.

Previous generations understood about death, and undoubtedly would have seen a reasonable amount of death. Once you get into the Victorian era, you might well have seen the funerals of many of your siblings before you were very old.