Mathematics is not a spectator sport. You have to get involved.

选自汉·桓宽《盐铁论·申韩》。曲木，弯曲的木头。恶，厌恶、怕。绳，木匠用以裁曲取直的墨绳。奸邪，奸邪之人。正法，公正无私的法律。这句话以曲木畏直绳作类比，说明公正无私之法对奸邪之人的威慑作用。

人生越是荒唐，死亡越是难以承受。

Science is not just about finding answers, but also about asking the right questions.

预测未来的最好方法就是创造未来。