From my early youth I have had the strongest desire to understand or explain whatever I observed. ... To group all facts under some general laws.
Charles DarwinI suppose you are two fathoms deep in mathematics, and if you are, then God help you. For so am I, only with this difference: I stick fast in the mud at the bottom, and there I shall remain.
Charles DarwinWhoever is led to believe that species are mutable will do good service by conscientiously expressing his conviction; for only thus can the load of prejudice by which this subject is overwhelmed be removed.
Charles DarwinI must begin with a good body of facts and not from a principle (in which I always suspect some fallacy) and then as much deduction as you please.
Charles Darwin