Iain McGilchrist richly explains the right and left hemispheres of the brain, how each functions and what each tends to do. This paper serves, firstly, as a primer to McGilchrist’s fascinating exposition. Second, it offers a formulation that uses a spiral to structure the iterative and layered relationship. Third, it presents McGilchrist’s concerns about how modernity has enfeebled the right hemisphere, and how the left hemisphere is, at it were, running amok. Fourth, it considers some of McGilchrist’s political overtones. Sharing McGilchrist’s concerns, finally, I elaborate why they might lead us to look to classical liberalism as the best way to avoid the traps of the left hemisphere, to invigorate the health of the right hemisphere, and to cope with modernity.

伊恩·麦吉尔克里斯特（Iain McGilchrist）丰富地解释了大脑的右半球和左半球，它们的功能如何以及它们的趋向。首先，本文是麦吉尔克里斯特（McGilchrist）迷人展览的入门。其次，它提供了一种使用螺旋结构来构造迭代和分层关系的公式。第三，它代表了麦吉尔克里斯特（McGilchrist）对现代性如何削弱右半球以及左半球如何运转的担忧。第四，它考虑了麦吉尔克里斯特的某些政治色彩。最后，我分享麦吉尔克里斯特的关切，阐述为什么它们可能导致我们将古典自由主义视为避免左半球陷阱，振兴右半球健康并应对现代性的最佳方法。