Vertigo, encountered early in Caillois’ childhood and rapidly promoted, in his scholarly work, to the rank of anthropological concept, is one of those creative frontiers Caillois tested. From the experiences of the body through to intoxication with sheer thinking, the writer has often placed himself in the ambiguous position of honouring vertigo, and of seeking it out whatever the cost. This disposition to vertigo, a manner of being rather that an object of knowledge, is a true choice and a commitment: it represents the adventurous and ambivalent manner in which this life found its shapes and its way of holding itself up.