梦想是变革的种子。没有种子，什么都不会生长；没有梦想，什么都不会改变。
Dreams are the seeds of change. Nothing ever grows without a seed, and nothing ever changes without a dream.
Theorems are not discovered by accident.
I don’t wait for opportunities, I create them.
Diversity in thought leads to innovation in action.
The key ingredients of happiness could not be material or aesthetic, but must always stubbornly psychological.
学习数学的唯一方法就是做数学。