Conduct

1. Be civil to all; sociable to many; familiar with few; friend to one; enemy to none.
by Benjamin Franklin

2. Make yourself necessary to somebody. Do not make life hard to any.
by Ralph Waldo Emerson

3.  Be neither too remote nor too familiar.
by Charles, Prince of Wales

4. Don't be too sweet, lest you be eaten up; don't be too bitter, lest you be spewed out.
by Jewish proverb

5. My code of life and conduct is simply this; work hard; play to the allowable limit; disregard equally the good and bad opinion of others; never do a friend a dirty trick; … never grow indignant over anything; … live the moment to the utmost of its possibilities; … and be satisfied with life always, but never with oneself.
by George Jean Nathan