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。
Don't let the noise of others' opinions drown out your own inner voice.
The most controversial thing I have ever done is to stick around.
The past is a shadow that follows us, no matter how fast we run.
The mind is a product of evolution and learning.