The function of entrepreneurs is to reform or revolutionize the pattern of production by exploiting an invention or, more generally, an untried technological possibility for producing a new commodity or producing an old one in a new way.

我跑步不是为了延长生命，而是为了给生命增添活力。

耐心是苦的，但它的果实是甜的。

"The world is a book, and those who do not travel read only one page."

While nothing justifiesstriking another student…I know goodfriends are worth defending.

正是依靠观察和思考才能找到方法。所以我们必须不断挖掘和钻研。