你送给我桃子,我就回报给你李子。意思是做人要知恩图报,不能忘恩负义。也比喻礼尚往来,相互赠送礼物。
Silence is not always absence; sometimes it is the loudest presence.
The most important thing in mathematics is to understand the concepts, not just to memorize formulas.
I'm more interested in the intensity of the experience than in just the form.