世界变化非常快。大不再能打败小,而是快的打败慢的。
在严冬之中,我发现,在我心中,有一个不可战胜的夏天。
The beauty of mathematics lies in its ability to reveal the underlying simplicity in what appears to be complex.
Actions are right in proportion as they tend to promote happiness; wrong as they tend to produce the reverse of happiness.