| 2012 | The ideals of inquiry: an ancient history | Prof. Sir Geoffrey Lloyd |
| 2010 | ”When the stars threw down their spears”: Histories of Astronomy and Empire | Professor S. Schaffer |
| 2006 | Images, Objects, and the Scientific Self | Professor P. Galison |
| 2000 | Footsteps to eternity: the implications of evolution | Professor S. Conway Morris |
| 1996 | Constructing geohistory in the age of revolution | Professor M. Rudwick |
| 1994 | From physics to metaphysics | Professor M. Redhead |
| 1991 | Kinds of people and kinds of things | Professor I. Hacking |
| 1988 | Matter, life, evolution | Sir Andrew Huxley |
| 1985 | Origins of life | Professor J.F. Dyson |
| 1982 | Socio-biology and comparative social theory | Professor E.O. Wilson |
| 1978 | Models of rationality | Professor M. Black |
| 1975 | Grammar, logic, and arithmetic | Professor W. Kneale |
| 1965 | Assumption and myth in physical theory | Professor H. Bondi |
| 1962 | The concept of time | Mr H.A.C. Dobbs |
| 1960 | The A sciences and the B sciences | Professor C.F.A. Pantin |
| 1956 | The physical basis of consciousness | Professor E. Schrödinger (read by Professor J. Wisdom) |
| 1953 | Cross purposes between theories | Professor G. Ryle |
| 1949 | Biology and language | Professor Woodger |
| 1947 | The concepts of physics | Sir Edmund Whittaker |
| 1946 | Laws of nature, probability, and scientific explanation | Mr R.B. Braithwaite |
