“Then do you mean to say, that a man learns the[se|th]e the use of these how to the use of these use these words & then for no earthly reason at intervals (just) sais them, for no earthly reason?” – Exactly; there is no reason here of the kind you mean. (If you say the reason is that he has pain it is analogous to saying, : “the reason why he sais that
= 2x is that it is so.”) And you have to
regard the utterance (without a reason) with the same respect as a statement that rests on a reason, not as something that lacks support.