[Macdonald Critchley].

In this paper, I review some of the writings of Macdonald Critchley with an accompanying biographical sketch. The contents of his first book, "Mirror-Writing" (1928) as well as those of "Aphasiology and other aspects of language" (1970), and his views on aphasia are presented. The book "Mirror-Writing" consists of a major review of mirror writing and related reversal phenomena. This monograph provides great insight on these symptoms, which are rare today. The ideas of Critchley on cerebral function and dysfunction (evolution and dissolution) substantially succeeded those of John Hughlings Jackson. Critchley's holistic view of aphasia is also briefly reviewed in this paper. The principal of Critchley's thoughts on neurological symptomatology is an interest in the origins of the brain, behavior, and language.