相对论是一种原理性理论，而非构造性理论。

Progress is not just about moving forward, but moving forward together.

The heart has its own memory, and it's a memory that doesn't always consult the brain.

The function of entrepreneurs is to reform or revolutionize the pattern of production by exploiting an invention or, more generally, an untried technological possibility for producing a new commodity or producing an old one in a new way.