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. Science may set limits to knowledge, but should not set limits to imagination.
 Bertrand Russell, A History of Western Philosophy (1945). copy citation

Context

“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. Science may set limits to knowledge, but should not set limits to imagination. Among Greek philosophers, as among those of later times, there were those who were primarily scientific and those who were primarily religious; the latter owed much, directly or indirectly, to the religion of Bacchus.” source