"The best performance improvement is the transition from the nonworking state to the working state."
Mathematics is a universal language that transcends cultural and linguistic barriers.
对幸福的追寻是不幸福的主要原因之一。
What ever you do, do it well. Do it so well that when people see you do it they will want to come back and see you do it again and they will want to bring others and show them how well you do what you do.