实现明天理想的唯一障碍是今天的疑虑。
The only limit to our realization of tomorrow is our doubts of today.
变革的最大障碍不是技术;而是对离开熟悉事物的恐惧。
I was never really insane except upon occasions when my heart was touched.
Sometimes, the hardest thing and the right thing are the same.