The healthy social life is found when in the mirror of each human soul the whole community finds its reflection, and when in the community the virtue of each one is living.

生活中最大的危险是采取过多的预防措施。

问题的数学表述通常比其解决方案更重要，后者可能仅仅是数学或实验技巧的问题。

别找错，找解决办法。