Happiness lies not in what we have, but in what we enjoy.
幸福不在于拥有什么，而在于享受什么。
Psychological concepts must prove their worth in action.
爱是一种力量，它能让我们超越自我，看到更广阔的世界。
If you don't change yourself, you will be changed by others.
真相不是你希望的样子；它就是它本来的样子，你必须屈服于它的力量，否则就活在谎言中。
Death is the only truly serious philosophical problem.