The relation between Heidegger and psychology has long been a neglected theme. Outside narrowly professional circles — particularly the school of Daseinsanalyse inaugurated by Binswanger — the implications of Heidegger's thought for psychology and psychotherapy have tended to be deemphasized if not entirely discounted. One reason for the neglect has been the scarcity of relevant source materials in this field. During the last few years this situation has dramatically changed, mainly due to the publication of the so-called (Zollikon Seminars Zollikoner Seminare) in 19870.¹