Ron Paul said this quote

Ideas are very important for the shaping of society. In fact, they are far more powerful than bombs or armies or guns. And this is because ideas are capable of spreading without limit. They are behind all the choices we make. They can transform the world in a way that governments and armies cannot. Fighting for liberty with ideas makes much more sense to me than fighting with guns or politics or political power. With ideas, we can make real change that lasts.