You must learn to run your kayak by a sort of ju-jitsu. You must learn to
tell what the river will do to you, and given those parameters see how you
can live with it. You must absorb its force and convert it to your users
as best you can. Even with the quickness and agility of a kayak, you are
not faster than the river, nor stronger, and you can beat it only by
understanding it.
-- Strung, Curtis and Perry, _Whitewater_
