and that's why you suck
Seriously though, you will have to lose that idea at some point in your improvement in chess. Part of the power of a piece is your ability to move it and to trade it. If you will never trade your bishops for knights, then your knights will be significantly more powerful than your bishops, because your bishops will be more limited in movement, and will never be allowed to capture any knights in a trade. You are in essence playing every game with disabled bishops, and will have to discard any plans that might involve such a trade.
I was going to say basically what loomis said, about knights not jumping. If you treat pieces as a point in the centre of their squares, then the knight doesnt ever encounter any resistance as it moves between a and b like other pieces. I believe any reference to a horse is a dead end, as I think this was just a staunton thing, and a knight really is not required to have anything whatsoever to do with horses. Also, given that the knight isnt doing anything special like jumping, really the knight's movement is simply fills in the gaps left by the other pieces.
thats a lie, they are the same. knights are good and you cant replace their movements with a queens movements.Bishops control diagnols and hat is good. there different but neither is better than the other!