Live as though you intend to live forever,and work as though your strength were limitless.
The only phrase I've ever disliked is, 'Why, we've always done it that way.' I always tell young people, 'Go ahead and do it. You can always apologize later.'
True scientific progress is achieved not by mere accumulation of facts, but by the continuous refinement of theories and models.
Literature is analysis after the event.
The function of the artist is to make people aware of what they already know but don't realize they know.