It's the most pleasant thing in the world to struggle for a noble ideal.
世界上最快乐的事,就是为理想而奋斗。
The only limit to our realization of tomorrow will be our doubts of today.
实现明天理想的惟一障碍是今天的疑虑。
Ideals are like the stars... we never reach them, but like mariners, we chart our course by them.
理想就像是星星...我们永远够不着它,但是我们像水手一样,靠星星指引航程。