Gravity

"Pure mathematics is, in its way, the poetry of logical ideas." - Albert Einstein

"... it is mathematics which reveals every genuine truth, for it knows every hidden secret, and bears the key to every subtly of letters; whoever, then, has the effrontery to study physics while neglecting mathematics, should know from the start that he will never make his entry through the portals of wisdom." - Thomas Bradwardine

”I know that I am mortal by nature, and ephemeral; but when I trace at my pleasure the windings to and fro of the heavenly bodies I no longer touch the earth with my feet: I stand in the presence of Zeus himself and take my fill of ambrosia” - Ptolemy

”Преди всичко трябва да се отхвърлят всички така наречени ”физични представи”, тъй като те не представляват нищо, освен термин за означаване на остарелите предразсъдъци на предишните поколения.” - Пол Дирак

”All you really need to know for the moment is that the universe is a lot more complicated than you might think, even if you start from a position of thinking it's pretty damn complicated in the first place.” - Douglas Adams

Interpretations of quantum mechanics, unlike Gods, are not jealous, and thus it is safe to believe in more than one at the same time. So if the many-worlds interpretation makes it easier to think about the research you’re doing in April, and the Copenhagen interpretation makes it easier to think about the research you’re doing in June, the Copenhagen interpretation is not going to smite you for praying to the many-worlds interpretation. At least I hope it won’t, because otherwise I’m in big t...

It is true that Fourier had the opinion that the principal aim of mathematics was public utility and explanation of natural phenomena; but a philosopher like him should have known that the sole end of science is the honor of the human mind, and that under this title a question about numbers is worth as much as a question about the system of the world. - Carl Jacobi

My work always tried to unite the true with the beautiful, but when I had to choose one or the other, I usually chose the beautiful. - Hermann Weyl (As quoted by Freeman Dyson in Obituary for Hermann Weyl)

In science one tries to tell people, in such a way as to be understood by everyone, something that no one ever knew before. But in poetry, it's the exact opposite. - Paul Dirac