We should not live by Darwinian principles. But Darwin explains how we got here.

A man is usually more careful of his money than he is of his principles.

It is possible that mankind is on the threshold of a golden age; but, if so, it will be necessary first to slay the dragon that guards the door, and this dragon is religion.

Men marry because they are tired; women, because they are curious; both are disappointed.

You have to enjoy life. Always be surrounded by people that you like, people who have a nice conversation. There are so many positive things to think about.