和平时期多流汗，战争时期少流血。
The more you sweat in peace, the less you bleed in war.
记忆不是关于过去，而是关于现在。
The brain is still forming in our 20s, which means it's more open to change.
数学的本质在于它的自由。
为明天做好的最好准备就是今天做好工作。