There is no sin except stupidity.

预测未来的最好方法就是创造它。

"Courage is not the absence of fear, but the triumph over it."

Read not to contradict and confute; nor to believe and take for granted; nor to find talk and discourse; but to weigh and consider.

Mathematics teaches us to think logically and to approach problems systematically.

These are something inside,that they can't get to ,that they can't touch,That's yours.