阅非为抵驳亦非舌簧；览不为胡诌而为衡虑。
Read not to contradict and confute; nor to believe and take for granted; nor to find talk and discourse; but to weigh and consider.
With a library you are free, not confined by temporary political climates. It is the most democratic of institutions because no one - but no one at all - can tell you what to read and when and how.
The soul that has conceived one wickedness can nurse no good thereafter.
山中有长得直的树，世上却没有直的人。
In mathematics, the journey from confusion to clarity is the most rewarding experience.