领导者的遗产是通过他们所指导的人的成功来衡量的。

法律规则不仅仅是威胁支持的命令；它们也是赋予权力和创造义务的规则。

The world needs responsible mining now more than ever.

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.