Firstly, it is said that I ought not to write about biology on the ground of my past career, which my critics declare to have been purely literary. I wish I might indulge a reasonable hope of one day becoming a literary man; the expression is not a good one, but there is no other in such common use, and this must excuse it; if a man can be properly called literary, he must have acquired the habit of reading accurately, thinking attentively, and expressing himself clearly. He must have endeavoured in all sorts of ways to enlarge the range of his sympathies so as to be able to put himself easily _en rapport_ with those whom he is studying, and those whom he is addressing. If he cannot speak with tongues himself, he is the interpreter of those who can—without whom they might as well be silent. I wish I could see more signs of literary culture among my scientific opponents; I should find their books much more easy and agreeable reading if I could; and then they tell me to satirise the follies and abuses of the age, just as if it was not this that I was doing in writing about themselves. What, I wonder, would they say if I were to declare that they ought not to write books at all, on the ground that their past career has been too purely scientific to entitle them to a hearing? They would reply with justice that I should not bring vague general condemnations, but should quote examples of their bad writing. I imagine that I have done this more than once as regards a good many of them, and I dare say I may do it again in the course of this book; but though I must own to thinking that the greater number of our scientific men write abominably, I should not bring this against them if I believed them to be doing their best to help us; many such men we happily have, and doubtless always shall have, but they are not those who push to the fore, and it is these last who are most angry with me for writing on the subjects I have chosen. They constantly tell me that I am not a man of science; no one knows this better than I do, and I am quite used to being told it, but I am not used to being confronted with the mistakes that I have made in matters of fact, and trust that this experience is one which I may continue to spare no pains in trying to avoid. Nevertheless I again freely grant that I am not a man of science. I have never said I was. I was educated for the Church. I was once inside the Linnean Society’s rooms, but have no present wish to go there again; though not a man of science, however, I have never affected indifference to the facts and arguments which men of science have made it their business to lay before us; on the contrary, I have given the greater part of my time to their consideration for several years past. I should not, however, say this unless led to do so by regard to the interests of theories which I believe to be as nearly important as any theories can be which do not directly involve money or bodily convenience.