I sent my Soul through the Invisible, Some letter of that After-life to spell: And by and by my Soul return'd to me, And answer'd "I Myself am Heav'n and Hell."
科学与日常生活不能也不应该被分开。
数学是一门活生生的学科，随着新的思想和发现不断演变。
The most important property of a program is whether it accomplishes the intention of its user.
"The best and most beautiful things in the world cannot be seen or even touched - they must be felt with the heart."