The beauty of life lies in its impermanence.
When you lend somthing pretend you are gifting. If it is returned， you'll be surprised and happy
The best books are the ones that challenge you.
The conjectures of the Langlands program are not merely problems to be solved but a vision of how mathematics should be.
数学的美在于它让我们看到世界上不立即显现的模式和结构。