This was taken from an interview with Brian Townsend (sbrugby/aba20):
Would you place yourself into the category of a “mathematical player” or “emotion-based player”? I know there are some pros that actually don’t really know math at all, just barely count the outs.
– All poker games have the same general principal. You have a hand and your opponent has a range of hands (which changes based on his current mood). All you have to do is determine the most likely range and how your hand holds up against it.
Townsend sums up poker in a few words. Beautiful and simple.