Mediocrity knows nothing higher than itself, but talent instantly recognizes genius.
Where facts are few, experts are many.
You don't get anything clean without getting something else dirty.
Always be nice to those younger than you, because they are the ones who will be writing about you.
When they discover the center of the universe, a lot of people will be disappointed to discover they are not it.
You must not lose faith in humanity. Humanity is an ocean; if a few drops of the ocean are dirty, the ocean does not become dirty.
I like an escalator because an escalator can never break, it can only become stairs. There would never be an escalator temporaly out of order sign, only an escalator temporarily stairs. Sorry for the convenience.