Real happiness is not dependent on external things.

The principle of happiness should be like the principle of virtue: it should not be dependent of things, but be a part of personality [and character].

The belief that youth is the happiest time of life is founded on fallacy. The happiest person is the person who thinks the most interesting thoughts, and we grow happier as we grow older.

A well-ordered life is like climbing a tower; the view halfway up is better than the view from the base, and it steadily becomes finer as the horizon expands.

If happiness truly consisted in physical ease and freedom from care the happiest, individual would not be either a man or a woman it; it would be, I think a cow.

Real happiness is not dependent on external things.

In a start-up company, you basically throw out all assumptions every three weeks.