The relevance of Freud's ideas for the 21^st Century had been discussed (Reppen, 2006). Although most of the contributors to that compendium believed that they were, I suggest that a ‘yes’ or ‘no’ answer is not possible with regard to the corpus of Freud's ideas as a whole; each idea has to be evaluated separately. Freud's theorizing is built on two different bases: a psychological and a biological one. Not only do these eventuate in two different kinds of formulations throughout this theory, but sometimes even with regard to the same construct at different times in his writing. As a consequence, the assessment of the relevance of Freud's ideas for the 21^st Century must be made construct by construct. A sampling of Freud's ideas about motivation, psychopathology and treatment were examined as to their contemporary relevance.