The strength of a habit is a function of the number of times it has been reinforced.

We choose to go to the moon in this decade and do the other things, not because they are easy, but because they are hard, because that goal will serve to organize and measure the best of our energies and skills, because that challenge is one that we are willing to accept, one we are unwilling to postpone, and one which we intend to win, and the others, too.

If you're not failing, you're not trying hard enough.

The most durable thing in writing is style, and style is the most valuable investment a writer can make with his time.