Some books are to be tasted, others to be swallowed, and some few to be chewed and digested.
  有些书应该只是尝试一下,有些应该被吸收,而有极少数书应该被咀嚼和消化。
在空无一物的地方,一切皆有可能。在有建筑的地方,其他可能性都不存在。
The less secure a man is, the more likely he is to have extreme prejudice.
In science, the credit goes to the person who convinces the world, not to the person to whom the idea first occurs.