"A more recent example of anomalous creativity is the work of the great mathematician Srinivasa Ramanujan, who died in 1920 at the age of 32. His notebook, which was lost and forgotten for about 50 years and published only in 1988, contains several thousand formulas -- without proof, in different areas of mathematics -- that were well ahead of their time, and the methods by which he found the formulas remain elusive. Ramanujan himself claimed that the formulas were revealed to him in his sleep. Is it possible that the creative process draws upon the unconscious in a manner that cannot be explained in rational terms?"