Philosophers understandably focus on the nature of reason itself. However, in order for reason to flourish, it needs to be practised in the right env… - Julian Baggini

This point is critical. Reason is often assumed to be by definition disinterested. Disinterested reason has its place, of course, in mathematics and science, but sometimes it can legitimately be very interested indeed. Reason needs to be objective, not disinterested, and this means it can recognise the objective existence of needs and desires, good and bad states.

The rehabilitation of reason is urgent because it is only through the proper use of reason that we can find our way out of the quagmires in which many big issues of our time have become stuck. Without a clear sense of what it means for one point of view to be more reasonable than another, it seems that the position one adopts is ultimately based on nothing more than personal opinion or preference.

Really good philosophising requires something more than a razor-sharp brain, something that is sometimes called subtlety of mind, a philosophical sensibility or insight. I call it judgement, which I define somewhat cumbersomely as as a cognitive faculty required to reach conclusions or form theories, the truth or falsity of which cannot be determined by an appeal to facts and/or logic alone. There are numerous examples of this, but perhaps the clearest comes from moral philosophy.