I don't need a reason to be confident.

Chemistry is the poetry of logic and the logic of poetry.

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.

有些人不喜欢变革，但如果不这么做的后果是灾难性的，你应当拥抱变革。