10 Famous Lines By Philosophers You Should Definitely Read

Every once in a while, a philosopher comes up with a great line, a saying that for one reason or another "sticks", so well that many - even most - of the people who employ the saying couldn't tell you which work the quip came from.  Why is that?  In most cases, it is because they haven't read that philosopher's work, or perhaps anything by that philosopher.  They just know - or rather, think they know - that the philosopher said it.  And it sounds cool, or apropos, or at l...