`` you had a crew before , and might have one again , yourself , and so might any of us , '' he pointed out , `` so the question is not whether one is in harness , but whether one may choose to be , or not , and if it is only a choice between being in harness or being in the breeding grounds , that is not enough of a choice at all , when the breeding grounds are so boring ; and that is the case even if one is in harness for the moment . ''