Do not use power to suppress opinions you think pernicious, for if you do the opinions will suppress you.

The human brain is a social brain, and it evolved to deal with social relationships.

The most perfect education, in my opinion, is such an exercise of the understanding as is best calculated to strengthen the body and form the heart.

文章贵在简洁，简洁则明了；贵在疏朗，疏朗则通畅；贵在深远，深远则持久。