悲伤就像海洋;它如潮水般起伏。有时水面平静,有时却势不可挡。我们所能做的就是学会游泳。
I don't sing because I'm happy; I'm happy because I sing.
Mental phenomena are nature's solutions to survival problems.
The joy of mathematics comes from the act of creation, not just the result.
最好的企业建立在激情和使命之上。