r ainsley quotes

A good topological theorem to mention any time is
the theorem which, in essence, states that however
you try to comb the hair on a hairy ball, you can
never do it smoothly - the so-called 'hairy-ball'
theorem. You can make snide comments about the
grooming of the hosts' dog or cat in the meantime as
you pick hairs off your trouser leg.
-- R. Ainsley in Bluff your way in Maths, 1988