Physics is the ultimate intellectual adventure, the quest to understand the deepest mysteries of our Universe. Physics doesn’t take something fascinating and make it boring. Rather, it helps us see more clearly, adding to the beauty and wonder of the world around us. When I bike to work in the fall, I see beauty in the trees tinged with red, orange and gold. But seeing these trees through the lens of physics reveals even more beauty.

Physics is an organized body of knowledge about nature, and a student of it says that he is learning physics, not nature. Art, like nature, has to be distinguished from the systematic study of it, which is criticism.

In physics you have a bit of everything: you need to be good at solving puzzles, but you also need to see the big picture, to separate important from unimportant things, to quickly understand new materials and quickly see the essence of a paper.

Physics is to be regarded not so much as the study of something a priori given, but rather as the development of methods of ordering and surveying human experience. In this respect our task must be to account for such experience in a manner independent of individual subjective judgement and therefore objective in the sense that it can be unambiguously communicated in ordinary human language.

Physics, my friend, is a narrow path drawn across a gulf that the human imagination cannot grasp. It is a set of answers to certain questions that we put to the world, and the world supplies the answers on the condition that we will not then ask it other questions, questions shouted out by common sense. And common sense? It is that which is understood by an intelligence using senses no different from those of a baboon. Such an intelligence wishes to know the world in terms that apply to its terrestrial, biological niche. But the world — outside that niche, that incubator of sapient apes — has properties that one cannot take in hand, see, sniff, gnaw, listen to, and in this way appropriate.

Most people who haven't been trained in physics probably think of what physicists do as a question of incredibly complicated calculations, but that's not really the essence of it. The essence of it is that physics is about concepts, wanting to understand the concepts, the principles by which the world works.

I am now convinced that theoretical physics is actually philosophy. It has revolutionized fundamental concepts, e.g., about space and time (relativity), about causality (quantum theory), and about substance and matter (atomistics). It has taught us new methods of thinking (complementarity), which are applicable far beyond physics.

... now I know that physics is about uncovering the reality behind appearances. It's about glimpsing this deep and hidden architecture of existence itself. It's about embracing that the world is not what it seems and that everything is stranger and simpler than we can imagine, and yet comprehensible.

Mathematics is really a liberal art if you look at it from a slightly different point of view.

Although technology often leads science in discovery, the philosophy of technology is usually drawn from the scientific philosophy of its time. In our time, the technology of machines has drawn its inspiration from mechanics, dealing with complexity by reducing the number of relevant parts. The technology of government, on the other hand, has drawn upon statistical mechanics, creating simplicity by dealing only with people in the structureless mass, as interchangeable units, and taking averages.

I think that physics is about escaping the prison of the received thoughts and searching for novel ways of thinking the world, about trying to clear a bit the misty lake of insubstantial dreams, which reflect reality like the lake reflects the mountains.

You would have to ask a physicist really but I think understanding fundamental problems in physics is very important because they are part of our culture. You just never know what is going to come from it. If you had told Isaac Newton about spaceships and satellites that arise from his laws of gravity, it would have been science fiction to him.

There are street artists. Street musicians. Street actors. But there are no street physicists. A little known secret is that a physicist is one of the most employable people in the marketplace - a physicist is a trained problem solver. How many times have you heard a person in a workplace say, "I wasn't trained for this!" That's an impossible reaction from a physicist, who would say, instead, "Cool. A problem I've never seen before. Let's see how I can figure out how to solve it!" Oh, and, have fun along the way.

Physics training is a good framework for reasoning," explains Musk. "It forces you to boil things down to their most fundamental truths and then connect those truths in a way that lets you understand reality. This gives you a way to attack the counterintuitive, a way of figuring out things that aren't obvious. When you're trying to create a new product or service, I think it's critical to use this framework for reasoning. It takes a lot of mental energy, but it's still the right way to do it.