过去是一个跟随我们的影子，但让它定义我们是我们的选择。
The past is a shadow that follows us, but it is our choice whether to let it define us.
The challenges of today are the opportunities of tomorrow—if we approach them with the right mindset.
When you do something best in life, you don’t really want to give that up – and for me it’s tennis.
Mathematics is not just about numbers, equations, computations, or algorithms: it is about understanding.