Pain is the absence of pleasure, pleasure is the absence of pain.
旧梦是好梦，没有实现，但是我很高兴我有过这些梦。
在现实生活中，善与恶的战争中最困难的一面是决定谁是善谁是恶。
Mathematics is not about numbers, equations, computations, or algorithms: it is about understanding.
数学不是关于数字、方程、计算或算法的：它是关于理解的。
The world needs to hear this guy. He's helped me discover a whole other side of myself that's been present all along but not acknowledged by me.