You think and there you are at the prow of thought, or else, you think and the thought is there before you. How to tell the difference? There is never only thought, but there must also be that which thought must respond to and that which answers to the venture of thought, often in unforeseen and unwanted ways. In one sense you are necessarily engaged, even fatally engaged, in the other sense you are always disengaged and could not enter the game even if you found a reason to do so.