The cost of liberty is less than the price of repression.
自由的代价比镇压的代价要低。
The only way to find out anything about what kinds of books people would like to read is to publish books and see what happens.
The footsteps of Nature are to be traced, not only in her ordinary course, but when she deviates from it in her most extravagant excursions.
The only way to discover the limits of the possible is to go beyond them into the impossible.