I desire also this reasonable favour from you: that, if hereafter I shall send you any paper tending to the advancement of physiques or mathematiques, and not too long, you will cause it to be printed by him that is printer to the Society, as you have done often for D^r Wallis: it will save me some charges. I am, S^r, Your affectionate frend and humble seruant THOMAS HOBBES. _November the 26th, 1672._ ffor my worthy and much honoured frend M^r HENRY OLDENBURGH, Secretary to the Royal Society. ----- Footnote 7: Amongst the MSS. of the Royal Society. ----- VII. TO THE RIGHT HONOURABLE THE MARQUIS OF NEWCASTLE.[8] The passions of man’s mind, except onely one, may bee observed all in other living creatures. They have desires of all sorts, love, hatred, feare, hope, anger, pitie, æmulation, and y^e like: onely of curiositie, which is y^e desire to know y^e causes of thinges, I never saw signe in any other living creature but in man. And where it is in man, I find alwaies a defalcation or abatement for it of another passion, which in beastes is commonly predominant, namely, a ravenous qualitie, which in man is called _avarice_. The desire of knowledge and desire of needlesse riches are incompatible, and destructive one of another. And therefore as in the cognitive faculties reason, so in the motive curiositie, are the markes that part y^e bounds of man’s nature from that of beastes. Which makes mee, when I heare a man, upon the discovery of any new and ingenious knowledge or invention, aske gravely, that is to say, scornefully, _what ’tis good for_, meaning what monie it will bring in, (when he knows as little, to one that hath sufficient what that overplus of monie is good for), to esteeme that man not sufficiently removed bn 484.png from brutalitie. Which I thought fit to say by way of anticipation to y^e grave scorners of philosophie, and that your lordship, after having performed so noble and honourable acts for defence of your countrie, may thinke it no dishonour in this unfortunate leasure to have employed some thoughts in the speculation of the noblest of the senses, _vision_.