There are two kinds of people: those who split the world into two kinds of people and those who don't. I guess I fall into the first kind (based on this and this).
Indira Ghandi had an interesting take on this: "There are two kinds of people, those who do the work and those who take the credit. Try to be in the first group; there is less competition there."
There are two kinds of people in the world, ...
... those who are psychotic and those who are invisible purple clowns trying to get me.
... those who know who Captain Feathersword is, and those without children.
... those who listen when you say “There are two kinds of people…” and whose who interrupt with a haughty skepticism.
Apparently the wonderful movie "The Good, The Bad and The Ugly" used this formula several times.
Really, there are only two kinds of people in the world: those who rode 10.5 miles on their recumbent bicycle this morning, and the unlucky ones.
Someone else said there are actually three kinds of people: those who can count and those who can't.