"Life is a journey that must be traveled no matter how bad the roads and accommodations."
生活是一段旅程，无论道路和住宿多么糟糕，都必须前行。
I have come to believe that a great teacher is a great artist and that there are as few as there are any other great artists. Teaching might even be the greatest of the arts since the medium is the human mind and spirit.
你越深入数学，就越意识到还有多少未知。
To this day, I have never taken a course anywhere, in chemistry, economics, psychology, or business.
时至今日，我从未在任何地方选修过化学、经济学、心理学或商业课程。