我不活在过去，也不活在未来，我活在当下。

The advancement of mathematics is through the continuous questioning of established truths.

The only way you can write the truth is to assume that what you set down will never be read.

People with a sense of fulfillment think it a good world and would like to conserve it as it is, while the frustrated favor radical change.

重要的不是你如何跌倒，而是你如何重新站起来。