子曰：“温故而知新，可以为师矣。”
【译文】 孔子说：“温习旧知识时，能有新收获，就可以做老师了。”
The wise person does not dogmatically assert anything， not even that the wise person knows nothing.
Every book is a new adventure in making.
要知道产生药物的根源之处，只在西南方向是根本所在。
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!