¹² Jack was deeply impressed at this time by the ‘Subjective Idealism’ of Bishop George Berkeley (1685–1753) as propounded in his Principles of Human Knowledge (1710). The Bishop held that when we affirm material things to be real, we mean no more than that they are perceived. What annoyed Jack about ‘the ogre in Boswell’ was the famous remark of Dr Johnson’s recorded in Boswell’s Life of Samuel Johnson. On 6 August 1763 Boswell wrote: ‘After we came out of the church, we stood talking for some time together of Bishop Berkeley’s ingenious sophistry to prove the non-existence of matter, and that every thing in the universe is merely ideal. I observed, that though we are satisfied his doctrine is not true, it is impossible to refute it. I never shall forget the alacrity with which Johnson answered, striking his foot with mighty force against a large stone, till he rebounded from it, “I refute it thus.”’ As Bishop Berkeley never met Dr Johnson, he had no chance of ‘standing up’ to him. Jack has confused the Bishop with his son, who was also named George. This George (1733–95) met Dr Johnson shortly after he came up to Oxford in 1752, and when Dr Johnson made fun of the Bishop’s abortive scheme for a missionary college in Bermuda the young George walked out of the room. He subsequently refused Dr Johnson’s repeated requests for permission to write a ‘Life of Bishop Berkeley.’