把意念沉潜得下，何理不可得；把志气奋发得起，何事不可为。
使意念沉稳，任何事理都能通达；有志发愤图强，任何难事都能成功。
The truth is you don't know what is going to happen tomorrow. Life is a crazy ride, and nothing is guaranteed.
The essence of mathematics is not just in solving problems but in asking the right questions.
"The best biographies don’t just tell a life; they reveal a soul."
美玉和石块同匣并放，鱼眼和宝珠一起贯穿。劣马和骏马混杂不分，老牛驾辕，骏马两边。