Science cannot solve the ultimate mystery of nature. And that is because, in the last analysis, we ourselves are a part of the mystery that we are trying to solve.
科学无法解开自然的终极奥秘。那是因为,归根结底,我们自己正是我们试图解开的奥秘的一部分。
The revolution is not an apple that falls when it is ripe. You have to make it fall.
Compassion for animals is intimately connected with goodness of character.