能够显示的，就不能说。
What can be shown, cannot be said.
The P versus NP problem is one of the most important problems in computer science.
材料是有记忆的，它们承载着时间和故事。
今天很残酷，明天更残酷，后天很美好，但绝对大部分是死在明天晚上，所以每个人不要放弃今天。
Violence leaves scars that never fully heal.
"Empathy is the key to innovation, as it allows us to understand and address the real needs of people."