我们是我们反复做的事情。因此,卓越不是一种行为,而是一种习惯。
Mathematics is a living subject, constantly evolving and growing.
In the quest for understanding, failure is not the opposite of success; it is a stepping stone to it.
我总是努力从每一种情况中吸取教训。
The hardest part of any challenge is taking the first step.
形容创业的艰辛