秩序和简化是掌握一门学科的第一步。
Order and simplification are the first steps toward the mastery of a subject.
We cannot change the past, but we can change how we view it.
The most important thing is to enjoy the journey.
The greatest legacy we can leave is a healthier planet for future generations.
Reason is immortal， all else mortal.
我不完美，我也不假装完美。
"The heart has its reasons which reason knows not."