Short idea (33): Everybody is normal. Some people are also abnormal. – This is a paradoxical way to put it, but I can't think of a clearer way. Implications: Abnormal people will begin to seem normal if you get to know them, and normal people may turn out to be abnormal. – You can use the same formula for “ordinary” and “extra-ordinary”: Everybody is ordinary; Some are also extra-ordinary; etc.
Short idea (197): Things we like and enjoy can be bad for us, including some people we like and enjoy.