Making something variable is easy. Controlling duration of constancy is the trick.
改变带来灵感的频率远高于灵感带来改变。
白云谦卑地站在天边,晨光给它披上壮丽的光彩。
瀑布歌道:「当我得到自由时,便有了歌声。」
The arithmetic of modular forms is a window into the hidden structures of the universe.