As in geometry the most natural way of beginning is from a mathematical point, so is the same method in observations and natural history the most genuine, simple, and instructive.
做人的气度要高旷但不可疏漏狂妄；心思要缜密但不可琐碎；趣味要淡但不可枯燥；操守要严明但不可激烈。
爱惜精神以备日后担当大任，虚度时光何以报父母之恩？
You have to fight to reach your dream. You have to sacrifice and work hard for it.