I was taught that the way of progress was neither swift nor easy.
The only limits that exist are the ones in your mind.
【譯文】 葉公問子路：孔子是怎樣的人，子路不回答。孔子說：“你怎么不說：他這個人啊，發(fā)憤學習就忘記吃飯，高興起來就忘記了憂愁，不知道快要變老了等等？”
Mathematics is not a spectator sport.
The market is always looking for the next big trend.