Conversation so far:
When did singer-songwriter Nick Drake go to Cambridge?
Drake enrolled at Fitzwilliam College, Cambridge University to study English Literature in October 1967.
Did singer-songwriter Nick Drake graduate from Cambridge?
According to Drake's friend Paul Wheeler, Drake had already decided not to complete his third year at Cambridge and was excited by the contract.

Question: Why did he decide to quit?
Self-contained rewrite: Why did singer-songwriter Nick Drake decide to quit Cambridge?