"Almost every one of your works is already in my hands, and I trust I have thence greatly improved my knowledge of botany. Mr Ellis informs me of your being about printing a new edition of your Systema Naturae and Genera Plantarum, both which I have ordered to be sent me as soon as they appear. From the riches and erudition of what you have already published, your whole mind being devoted to this one pursuit, I am at no loss to anticipate the still greater degree of information, elegance, and perfection, of your future performances. Nothing, indeed, more excites my wishes, as a certain source of pleasure and improvement, than to be more deeply conversant with your writings; that I may not only profit by your genius, but, at the same time, have the information of the most eminent and approved writers in botany always ready at hand. "I am disgusted with the coarse and malicious style in which some carping and slanderous critics have attacked these works of yours, the delight and ornament of botanical science. But such men are objects of pity rather than anger. Their blind inclination to find fault leads them so far into the mazes of absurdity, that they censure what ought to afford them nothing but instruction. Their futile reasonings, indeed, fall harmless to the ground, like the dart of Priam from the shield of Pyrrhus. The works they abuse shine brighter the more strictly they are scrutinized, and will certainly be read with delight by men in every age who are best qualified to appreciate their value. Your censors, when duly weighed themselves, seem to have acquired what they know by application rather than by any great powers of mind; and they make but a poor figure, with all that they can find to say, when they enter into a controversy with a man whose learning has received its last polish from genius. Nor are you, my excellent friend, unsupported in the contest; for you are surrounded by all who have entered on the same studies at the impulse of genius, or under the auspices of Minerva, and whose industry has gradually improved, sharpened, and given the last finish to the powers of their understanding. These stand ready armed for the battle in your defence. They will easily put to flight the herd of plodding labourers; for nature can certainly do much more without learning, than learning without nature.