The more you read, the more you realize how little you know.

There is no method but to be very intelligent.

Happiness is beneficial for the body, but it is grief that develops the powers of the mind.

我们星球的健康取决于我们在农业中所做的选择。

A picture is a fact.

Sometimes you have to lose yourself to find yourself.

The beauty of mathematics lies in its simplicity and universality.