It is scarcely possible to doubt that the love of man has become instinctive in the dog.
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 DarwinAs man advances in civilization, and small tribes are united into larger communities, the simplest reason would tell each individual that he ought to extend his social instincts and sympathies to all members of the same nation, though personally unknown to him. This point being once reached, there is only an artificial barrier to prevent his sympathies extending to the men of all nations and races.
Charles DarwinIf I had my life to live over again, I would have made a rule to read some poetry and listen to some music at least once every week.
Charles Darwin