What is Reality?

"A person who thinks all the time Has nothing to think about except thoughts So, he loses touch with reality And lives in a world of illusions By thoughts I mean specifically, chatter in the skull Perpetual and compulsive repetition of words Of reckoning and calculating I'm not saying that thinking is bad Like everything else, It's useful in moderation A good servant, but a bad master And all so called civilized peoples Have increasingly become crazy and self destructive Because, through excessive thinking The have lost touch with reality That's to say We confuse signs With the real world"