‘Sketch for a Proof of Rebirth’ was published (and reprinted several times) in abbreviated form: the text reproduced here is taken from the author’s typescript, which may be regarded as the definitive version. The essay first appeared in The Light of the Dhamma for April 1957, pp. 37-42, without the Appendices. Footnotes include the author’s later comments, written in pencil on the typescripts. Footnotes belonging to the original texts are indicated by the symbol *. Those footnotes or parts thereof which are in square brackets are editorial.