[.] There are a few points still which it were well we should consider. We are all too apt when we sit down to study a subject to have already formed our opinion, and to weave all matter to the warp of our preconceived judgment, to fall in with the received idea, and, with biassed minds, unconsciously to follow in the wake of public opinion, while professing to lead it. To the best of my belief half the dogmatism of those we daily meet is in consequence of the unwitting practices of this self-deception. Simply let us not talk about what we do not understand, save as learners, and we shall not by writing mislead others. There is no shame in being obliged to others for opinions, the shame is not being honest enough to acknowledge it: I would have no one omit to put down a useful thought because it was not his own, provided it tended to the better expression of his matter, and he did not conceal its source; let him, however, set out the borrowed capital to interest. One word more and I have done. With regard to our subject, the best rule is not to write concerning that about which we cannot at our present age know anything save by a process which is commonly called cram: on all such matters there are abler writers than ourselves; the men, in fact, from whom we cram. Never let us hunt after a subject, unless we have something which we feel urged on to say, it is better to say nothing; who are so ridiculous as[.]".