诗歌是一种非常个人化的艺术。
What we fear doing most is usually what we most need to do.
每一句话都是一次信仰的飞跃。
The wisdom of hindsight, so useful to historians and indeed to authors of memoirs, is sadly denied to practising politicians.
量子密码学不依赖于数学问题的难度,而是依赖于物理学的基本定律。