He who remembers from day to day what he has yet to learn, and from month to month what he has learned already, may be said to have a love of learning.
A man without a mustache is a man without a soul.
The cautious seldom err.
Study without reflection is a waste of time; reflection without study is dangerous.
Don't do unto others what you don't want others to do unto you.
Even in killing men, observe the rules of propriety.