Optimism is a strategy for making a better future. Because unless you believe that the future can be better, you are unlikely to step up and take responsibility for making it so.
What you don't do determines what you can do.
数学是一种让我们能够描述无法描述的事物的语言。
我做事情不是为了得到反应或批评,我为自己感到快乐的事情而活。