"This is not an interview mate, but an intense interrogation". That was the reply I received after sending my list of questions, in written form, to one of the people that I interviewed for this volume. It could be argued that, at least in a way, they were right. The interviews included here attempt to grasp as much as possible of the political life and intellectual work of the interviewees. In other words, its aim is to present their political formation as much as their positioning in key debates they engaged in throughout their academic careers.