Wisdom acquisition is a moral duty.It's not something you do just to advance in life...You are not going to get very far in life based on what you already know.You're going to advance in life by what you learn after you leave here.
外交是一门没有永久朋友，只有永久利益的学科。
哲学的真正意义在于它能够唤醒我们内心的质疑精神。