Every man that hath spare money, can get furnaces, and buy coals. Every man that hath spare money, can be at the charge of making great moulds, and hiring workmen to grind their glasses; and so may have the best and greatest telescopes. They can get engines made, and apply them to the stars; recipients made, and try conclusions; but they are never the more philosophers for all this. It is laudable, I confess, to bestow money upon curious or useful delights; but that is none of the praises of a philosopher. And yet, because the multitude cannot judge, they will pass with the unskilful, for skilful in all parts of natural philosophy. And I hear now, that Hugenius and Eustachio Divini are to be tried by their glasses, who is the more skilful in _optics_ of the two; but for my part, before Mr. Hobbes his book _De Homine_ came forth, I never saw any thing written on that subject intelligibly. Do not you tell me now, according to your wonted ingenuity, that I never saw Euclid’s, Vitellio’s, and many other men’s _Optics_; as if I could not distinguish between _geometry_ and _optics_. So also of all other arts; not every one that brings from beyond seas a new gin, or other jaunty device, is therefore a philosopher. For if you reckon that way, not only apothecaries and gardeners, but many other sorts of workmen, will put in for, and get the prize. Then, when I see the gentlemen of Gresham College apply themselves to the doctrine of motion, (as Mr. Hobbes has done, and will be ready to help them in it, if they please, and so long as they use him civilly,) I will look to know some causes of natural events from them, and their register, and not before: for nature does nothing but by motion. I hear that the reason given by Mr. Hobbes, why the drop of glass so much wondered at, shivers into so many pieces, by breaking only one small part of it, is approved for probable, and registered in their college. But he has no reason to take it for a favour: because hereafter the invention may be taken, by that means, not for his, but theirs. To the rest of your calumnies the answers will be short, and such as you might easily have foreseen. And first, for his boasting of his learning, it is well summed up by you in these words: _It was a motion made by one, whom I will not name, that some idle person should read over all his books, and collecting together his arrogant and supercilious speeches, applauding himself, and despising all other men, set them forth in one synopsis, with this title_, Hobbius de se. _What a pretty piece of pageantry this would make, I shall leave to your own thoughts._