数学的快乐来自于为理解而奋斗。
The joy of mathematics comes from the struggle to understand.
The secret to success is to keep moving forward.
It is in your moments of decision that your destiny is shaped.
The fact that there is nothing permanent except change is a permanent theme in nature.
The story of the human race is the story of men and women selling themselves short.
Intelligence plus character – that is the goal of real education.