The main thing in life is not to stop questioning. Curiosity has its own reason for existing.

Mathematics is the music of reason.

我不知道有谁比我更需要一个拥抱。

薪柴会烧完，火种却传下去，不会穷尽。

要想有自信的态度，请学习不曾学过的知识。

如果事实、逻辑和科学过程都只是随意的“社会化构建出来的”说辞，那么我们能够得到的就只是某种共识--具体而言，也就是同伴群体中的共识，那种青春期的人们或者知识界很多人当中更愿意信奉的共识。

你必须成为你希望在世界上看到的改变。

Come,my friends,Tis not too late to seek a newer world,For my purpose holds to sail beyond the sunset，And though we are not now that strength which in old days moved earth and heaven,That which we are, we are;-- One equal temper of heroic hearts, Made weak by time and fate, but strong in will. To strive, to seek, to find, and not to yield。

Children totally accept — and crave — family rules. “In our family we have a rule for X” is the only excuse a parent needs for setting a family policy. In fact， “I have a rule for X” is the only excuse you need for your own personal policies.