田横的五百壮士如今在哪里？难道归来后都能封侯吗？

The present is a point just passed.

Innovation in science often comes from looking at old problems in new ways.

You can't cross the sea merely by standing and staring at the water.

抽象的力量使数学能够超越物理现实的限制。

多样化是金融中唯一的免费午餐，但它需要纪律和耐心。