If one only wished to be happy, this could be easily accomplished; but we wish to be happier than other people, and this is always difficult, for we believe others to be happier than they are.
The piano is like an old friend to me.
她感到一种奇怪的归属感，仿佛终于找到了自己在世界上的位置。
追随你的心，但别忘了带上你的大脑。
Inflation is the mechanism that can make the universe flat, homogeneous, and isotropic.