To exist is to have a subjective existence.
出自先秦《荀子·非相》。赠人以有益之言,比赠人以金石珠玉更显珍贵。说明有益的建言对他人事业人生的助益作用。
我只和自己竞争,不和别人竞争。
中庸:不走极端。对别人的伤害保持隐忍,将此视为应得之事。
The goal of mathematics is not to solve problems, but to understand them.
We are not victims of our circumstances. We are products of our decisions.