自守形式的研究是数学思想深度的反映。

有明确身份认同的人知道他们是谁以及他们代表什么。他们有强烈的自我意识，不容易被他人左右。

Everything was beautiful and nothing hurt.

When you’re in a tough spot, remember why you started.

By the help of microscopes, there is nothing so small as to escape our inquiry; hence there is a new visible world discovered to the understanding.

眼界要开阔，就要游鉴名山大川；度量应宏大，须得熟读经史典籍。

诗歌是反映灵魂的镜子。