数学的美在于它简化复杂问题的能力。

If you want something you've never had, you must be willing to do something you've never done.

我不悲伤。我不快乐。我只是在这里

我们今天种下的每一粒种子都是对后代的承诺。

The more we learn of the true nature of non-human animals, especially those with complex brains and corresponding complex social behaviour, the more ethical concerns are raised regarding their use in the service of man—whether this be in entertainment, as ‘pets,’ for food, in research laboratories or any of the other uses to which we subject them.