I can hardly wait for our upcoming daughter to be old enough to appreciate Mark Twain’s Advice to Youth. It’s some of the best advice I’ve read in ages. (I really do want her to read it, along with everything Oscar Wilde ever wrote, for starters…)
Be respectful to your superiors, if you have any, also to strangers, and sometimes to others. If a person offend you, and you are in doubt as to whether it was intentional or not, do not resort to extreme measures; simply watch your chance and hit him with a brick. That will be sufficient.