The heights by great men reached and kept were not attained by sudden flight, but they, while their companions slept, were toiling upward in the night.
If people are highly successful in their profession they lose their senses. Sight goes. They have no time to look at pictures. Sound goes. They have no time to listen to music. Speech goes. They have no time for conversation. They lose their sense of proportion.
I can think of nothing more soul destroying in life than to persist in trying to do a thing you want desperately to do well, and to know that you are at the best second rate.
At bottom every man knows well enough that he is a unique being, only once on this earth; and by no extraordinary chance will such a marvelously picturesque piece of diversity in unity as he is, ever be put together a second time.
I've come to embrace the notion that I haven't done enough in my life. I've come to confirm that one's title, even a title like president of the United States, says very little about how well one's life has been led. No matter how much you've done or how successful you've been, there's always more to do, always more to learn, and always more to achieve.