“The principle behind Barcelona’s style was very simple: play with the ball, do everything with it. Every footballer around the world decided to play football because one day in some corner of their small village or big city, wherever it was, they kicked a ball around and enjoyed it. Barça’s system, even if people say it’s very complicated, is as simple as that: we’ll get the ball and just let them try and take it off us; let’s pass it between us as much as possible and see if we can score a goal. What I’ll try and do in the future is what I did when I was a player, what I believed in, and what I’ve coached for the past five years: attack as well as you possibly can, keep hold of the ball and pass it to a guy wearing the same colour shirt.”
Pep Guardiola to FIFA.com
As my favorite high school chemistry teacher once(more that once really) said, Keep It Simple Stupid.