"The future of science lies in the hands of the young."

"I have in fact been a very lucky fellow; I have often said that I should be a very miserable creature if I could not feel that I was doing something for the good of other people."

"Let us now consider, for a little while, how wonderfully we stand upon this world. Here it is we are born, bred, and live, and yet we view these things with an almost entire absence of wonder to ourse…"

"I can at any moment convert my time into money, but I do not require more of the latter than is sufficient for necessary purposes."

"The book of nature is written in the language of mathematics."