数学不知道种族或地理边界;对于数学来说,文化世界是一个国家。
The photograph isn't good enough. It's not radical enough.
历史数据以不同寻常的力量支持了一个结论。要成功投资,您必须成为长期投资者。
Don’t let fear stop you from taking the first step.
The only limit to our realization of tomorrow will be our doubts of today.
信仰与看不见的事物有关,希望与尚未到来的事物有关。