Society can and does execute its own mandates， and if it issues wrong mandates instead of right， or any mandates at all in things with which it ought not to meddle， it practices a social tyranny more formidable than many kinds of political oppression， since， though not usually upheld by such extreme penalties， it leaves fewer means of escape， penetrating much more deeply into the details of life， and enslaving the soul itself.

科学中最强大的工具不是技术，而是想象力。

"世界是一本书，而书是一座监狱。"

预防性医疗的悖论：越需要的人越不重视。