The only limit to our realization of tomorrow is our doubts of today.

God is at home, it's we who have gone out for a walk.

Challenges are what make us grow; embrace them with courage and determination.

The real conflict is between the rights of the individual and those of society.

出自北齐·颜之推《颜氏家训·勉学》。不得，不能、不可。雌黄，矿物名，可作颜料，古代用以涂改文字，后引申为信口更改、随便乱说。没有读够一定数量的书，对前人的见解没有彻底了解，是不能随便乱下结论、乱发议论的。书要多读、话要谨慎；应当谦虚向学，不可妄自尊大。

宇宙不仅比我们想象的更奇怪，它比我们能够想象的还要奇怪。

在黑暗中，即使是一点微光也能指引你回家。

You have to be willing to work harder than anyone else.

Be yourself; everyone else is already taken.