Vol. 13 Num. 1 (1993) Dick Tahta Editorial2 Derek Ball Mathematics and the oedipal struggle4 Chris Breen Holding the tension of opposites6 Tony Brown , Tansy Hardy , Dave Wilson Mathematics on Lacan's couch11 David Hawkins Early roots15 Ian Mordant Psychodynamics of mathematics texts20 Robert Nicodemus Transformations24 Jaques Nimier Defense mechanisms against mathematics30 David Pimm The silence of the body35 Ross M. Skelton Bion and problem-solving39 Rosamund Sutherland Consciousness of the unknown43 Dick Tahta Victoire sur les maths47 Sherry Turkle , Seymour Papert Styles and voices49 David Wheeler Knowledge at the crossroads53