Sir: Psychotherapy may well "be made of sterner stuff than aromatherapy and colonic irrigation" (Letters, 6 May) but, whatever it is, it is not an elaboration of the Socratic injunction "know thyself".
These words were inscribed on Apollo's Temple at Delphi. They are not an invitation to introspection but a solemn reminder that we are mere mortals, not gods, and must remember our limitations. The other Delphic precept was, of course, "nothing in excess".
The oracle did declare Socrates was the wisest man in Greece, but that is another story.
Yours faithfully,
P. .J. C. MURRAY
Loughton, Essex
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