数学中最重要的技能是清晰思考的能力。
The most important skill in mathematics is the ability to think clearly.
The wild is a place of danger. To survive, you have to respect it.
一个善待别人的人,别人也会善待你。《孟子》中也说“爱人者,人恒爱之;敬人者,人恒敬之”,爱别人的人,别人也会爱他;尊敬别人的人,别人也会尊敬他。