The only real journey is the one within.

I have noticed that youngsters given to the climbing habit usually do something when they grow up.

随着知识的每一次增长，以及每一种新工具的发明，人类的劳动都会得到简化。

"Books are the quietest and most constant of friends; they are the most accessible and wisest of counselors, and the most patient of teachers."

不要让恐惧阻止你追求梦想。