"When we practice zazen (meditation) our mind is calm and quite simple. But usually our mind is very busy and complicated, and it is difficult to be concentrated on what we are doing. This is because before we act we think, and this thinking leaves some trace. . . In order not to leave a trace, when you do something, you should do it with your whole body and mind; you should be concentrated on what you do. You should do it completely, like a good bonfire. You should not be a smoky fire. You should burn yourself completely."
from Zen Mind, Beginner's Mind by Shunryu Suzuki