The Master and His Emissary: The Divided Brain and the Making of the Western World

by Iain McGilchrist

There are, it seems to me, four main pathways to the truth: science, reason, intuition and imagination. I also believe strongly that any world view that tries to get by without paying due respect to all four of these is bound to fail. Each on its own has its virtues and its vices, its gifts and its inherent dangers: only by respecting each and all together can we learn to act wisely. And each is a blend of elements contributed by either hemisphere. However, the same proviso applies in each case, namely that for each to be successful, what the left hemisphere can offer must be used in service of what the right hemisphere knows and sees, not the other way round. This is as important in the case of science as in that of imagination, in the case of reason as in that of intuition. The left hemisphere is a wonderful servant, but a very poor master. We also need to be aware of the sheer extent to which the left hemisphere is, in the most down-to-earth, empirically verifiable way, less reliable than the right – in matters of attention, perception, judgment, emotional understanding, and indeed intelligence as it is conventionally understood. And that means that we should be appropriately sceptical of the left hemisphere’s vision of a mechanistic world, an atomistic society, a world in which competition is more important than collaboration; a world in which nature is a heap of resource there for our exploitation, in which only humans count, and yet humans are only machines – not eve...