Upon his return to England, he lived retired at the seat of the earl of Devonshire, and applied himself to the study of philosophy; and as almost all men who have written any thing successfully would be thought poets, so Hobbs laid claim to that character, tho' his poetry is too contemptible for crit[i]cism. Dr. White Kennet in his memoirs of the family of Cavendish informs us, 'That while Mr. Hobbs lived in the earl of Devonshire's family, his professed rule was to dedicate the morning to his health, and the afternoon to his studies; and therefore at his first rising he walked out, and climbed any hill within his reach; or if the weather was not dry, he fatigued himself within doors, by some exercise or other till he was in a sweat, recommending that practice upon his opinion, that an old man had more moisture than heat; and therefore by such motion heat was to be acquired, and moisture expelled; after this he took a breakfast, and then went round the lodgings to wait upon the earl, the countess, and the children, and any considerable strangers, paying some short addresses to them all. He kept these rounds till about 12 o'clock, when he had a little dinner provided for him, which he eat always by himself without ceremony. Soon after dinner he retired into his study, and had his candle, with ten or twelve pipes of tobacco laid by him, then shutting the door he fell to smoaking and thinking, and writing for several hours.' He retained a friend or two at court to protect him if occasion should require; and used to say, it was lawful to make use of evil instruments to do ourselves good. 'If I were cast (said he) into a deep pit, and the Devil should put down his cloven foot, I should take hold of it to be drawn out by it.' Towards the end of his life he read very few books, and the earl of Clarendon says, that he had never read much but thought a great deal; and Hobbs himself used to observe, that if he had read as much as other philosophers, he should have been as ignorant as they. If any company came to visit him, he would be free of his discourse, and behave with pleasantry, till he was pressed, or contradicted, and then he had the infirmities of being short and peevish, and referring them to his writings, for better satisfaction. His friends who had the liberty of introducing strangers to him, made these terms with them before admission, that they should not dispute with the old man, or contradict him.