Eliphas Levi described insufflation as "one of the most important practices of occult medicine, because it is a perfect sign of the transmission of life. To inspire, as a fact, means to breathe upon some person or thing, and we know already, by one doctrine of Hermes, that the virtue of things has created words, and that there is an exact proportion between ideas and speech, which is the first form and verbal realisation of ideas. The breath attracts or repels, according, as it is warm or cold. The warm breathing corresponds to positive electricity and the cold breathing to negative electricity. Warm and prolonged insufflation restores the circulation of the blood, cures rheumatic and gouty pains, re-establishes the balances of the humours and dispels lassitude. When the operator is sympathetic and good, it acts as a universal sedative.