On Theories

I like this quotation especially because so much energy is expended by universities and business schools trying to create their own variation on the notion of 'management science,' and because those of us who work in the behavioural sciences ought to bear this in mind and take it to heart. It's from Aleksander Isaaokovich Kitalgorodskii:

A first-rate theory predicts; a second-rate theory forbids; and a third-rate theory explains after the event.