‘It is well known that Eisler was a master of the art of self-contradiction, using non-sequitur, change of tack and playing devil’s advocate in a brilliantly ironic way in an attempt to look at a problem from every angle, to expose it fully to the gaze of his interlocutor. For an ordinary person to take part in this, let alone keep up with the pace and fully appreciate the wide range of references, which his enormous reading threw out, was wonderfully stimulating, and exhausting.’