One cannot think well, love well, sleep well, if one has not dined well.
你不是你自己。
实证研究中最重要的是要清楚你想要回答的问题。
有福之人遭到不幸只是损失钱财,无福之人遭遇不幸则会伤及性命。
The greatest theorems often start as simple conjectures, born out of intuition.