复杂性理论告诉我们，并非所有问题都是平等的；有些问题本质上比其他问题更难。
"Complexity theory teaches us that not all problems are created equal; some are inherently harder than others."
A great novel is one that leaves the reader changed.
如果道歉夹带了借口，那就算不上是道歉。如果称赞夹带了要求，那就算不上是称赞。
The only limits in life are the ones you set for yourself.
积极情绪就像是心灵的营养，帮助我们成长和蓬勃发展。