Theorems are eternal; their proofs are ephemeral.

When you read,don't just consider what the author thinks,consider what you think.

出自汉·桓宽《盐铁论·论灾》。兵器是凶器。盔甲坚固，兵器锋利，那是天下的祸害。此言战争对人类的危害性，寄寓了反对战争的思想。

In the end, we will remember not the words of our enemies, but the silence of our friends.

没有遗忘，生活是完全不可能的。

脱碳之路是复杂的，但不作为的代价要大得多。