Robots are used in emotional relationships. On the other hand, it is not very common to think that robots can be used as partners in a philosophical dialog. It would be challenging to find the conditions under which a robot can be one of the parts in an emotional relationship or in a Socratic dialog. Robots usable as emotional or philosophical companions need probably to function well at both dimensions, providing continuous and interchanging support for feelings and reasoning. Our aim here is not to investigate the technical possibilities for such a machine but the theoretical requirements and ethical conditions for its creation and use.