【释义】当商品价格高涨时，要像对待粪土一样迅速出售；当商品价格低廉时，要像对待珠玉一样大量购入。

The most dangerous illusions are those we mistake for reality.

When people talk to us about others, they are usually dull. When they talk to us about themselves, they are nearly always interesting.

代数簇的算术证明了抽象思维的力量。