Much of what is greatest in human achievement involves some element of intoxication,* some sweeping away of prudence by passion. Without the Bacchic element, life would be uninteresting; with it, it is dangerous. Prudence versus passion is a conflict that runs through history.
 Bertrand Russell, A History of Western Philosophy (1945). copy citation

Context

“In intoxication, physical or spiritual, he recovers an intensity of feeling which prudence had destroyed; he finds the world full of delight and beauty, and his imagination is suddenly liberated from the prison of every-day preoccupations. The Bacchic ritual produced what was called “ enthusiasm, ” which means, etymologically, having the god enter into the worshipper, who believed that he became one with the god. Much of what is greatest in human achievement involves some element of intoxication,* some sweeping away of prudence by passion. Without the Bacchic element, life would be uninteresting; with it, it is dangerous. Prudence versus passion is a conflict that runs through history. It is not a conflict in which we ought to side wholly with either party.
In the sphere of thought, sober civilization is roughly synonymous with science. But science, unadulterated, is not satisfying; men need also passion and art and religion.” source