Sustainability isn't a cost—it's an investment in our future.

真相很少是纯粹的，也从不简单。

The speech we hear is an indication of that which we don't hear. It is a necessary avoidance, a violent, sly, anguished or mocking smokescreen which keeps the other in its place.

The essence of mathematics lies in its freedom.

The richness I achieve comes from Nature, the source of my inspiration.

数学推理可以相当系统地看作是两种能力的结合运用，我们可以称之为直觉和独创性。