理解某事的最好方法就是尝试去改变它。
大丈夫应当早晨还在碧海,傍晚就到达苍梧山(形容志向远大,行动迅速)
数学的快乐来自创造的行为,而不仅仅是结果。
I'm not afraid of aging. I think it's a privilege to grow old.
The measure of our success is not just in tons extracted, but in communities uplifted.