It is futile to demand an a priori proof of the existence of objects which are not immediately ‘given’.
要求对并非直接被给予的对象提供先天证明，是徒劳的。
The jaws of power are always open to devour, and her arm is always stretched out, if possible, to destroy the freedom of thinking, speaking, and writing.
我们不仅要追求技术的领先，更要追求技术的实用性和普及性。