When a professor insists computer science is X but not Y, have compassion for his graduate students.
A wise man said: before you speak， let your words pass through three gates. At the first gate， ask yourself， "Is it true？" At the second gate， ask "Is it necessary？" At the third gate， ask， "Is it kind？"
The final test of a novel is whether you care so much for the people that you want to know what happens to them next.
The poet is a man who plants a tree and then sits in its shade.