The pain of discipline is better than the pain of regret.
自律的痛苦比后悔的痛苦要好。
重要的不是想法，而是将想法变为现实。
We are all obsessed with the idea of the frontier, but it's a frontier that keeps receding.
解释：身居高位的人容易骄纵自满，处于安乐生活中的人容易奢侈。
Whatever you fight, you strengthen, and whatyou resist, persists.
我对这场战争了解的不多，但我知道美国的很多年轻人都参与了这场战争。
真正的艺术家总是在寻找生命的意义。
人生没有重来，所以要珍惜每一刻。
The dinosaurs became extinct because they didn't have a space program. And if we become extinct because we don't have a space program, it'll serve us right!
墙壁定义了空间，但开口将其与世界连接。