books to the theme of happiness, and in 1960 summed up his thoughts on happiness thus:Vitality of mind and body; the activity to employ and maintain them; the zest and curiosity that they can animate; freedom to travel widely in nature and art, in countries of the world and countries of the mind; human affections; and the gift of gaiety – these seem to me, then, the main causes of happiness. I am surprised to find how few and simple they are. Lucas lived at 7 Camden Place, Cambridge, from 1921 to 1925; at 20 West Road, Cambridge from 1925 to 1939; at High Mead, Great Brickhill from 1939 to 1945; and again at 20 West Road, Cambridge, from 1945 until his death in 1967. The dissident Czech academic Otakar Vočadlo (1895–1974), Lucas's Prague correspondent in 1938–39 (see Appeasement below) and a concentration camp survivor, celebrated his restoration, during the Prague Spring of 1968, to his Chair of English at Prague, by giving a course of lectures on Webster in memory of Lucas, whose support for the Czech cause in 1938–39 had not been forgotten. D. W. Lucas, the classical scholar (1905–85), Fellow of King's College, Cambridge, University Director of Studies in Classics, and Perceval Maitland Laurence Reader in Classics, was F. L. Lucas's brother. Literary criticism Approach Except in reviews of work by contemporaries, Lucas adopted the historical and biographical approach to criticism and examined the views of earlier critics, whose dogmatism he was swift to rebut. He increasingly linked his studies to developments in psychology, notably in Literature and Psychology (1951). "The real 'unwritten laws'," he observed, "seem to me those of human psychology." Centrally, he discussed the writer's psychology as revealed through style. "Even science," he noted, "has invented no pickle for embalming a man like style." The poets to whom he returned most often in publications were Tennyson (1930, 1932, 1947, 1957) and Housman (1926, 1933, 1936, 1960), but he ranged widely over Classical, European and English literature. Conscious that books can influence for good or ill, he admired authors he saw as defenders of sanity and good sense – men like Montaigne and Montesquieu – or as compassionate realists, like Homer in the Iliad, Euripides, Hardy, Ibsen and Chekhov. "Life is 'indivisible'," he wrote. "A public tends to get the literature it deserves: a literature, to get the public it deserves. The values men pursue