Cash never makes us happy, but it's better to have the money burning a hole in Berkshire's pocket than resting comfortably in someone else's.
Warren BuffettThe optimum portfolio depends on the various expectations of choices available and the degree of variance in performance which is tolerable. The greater the number of selections, the less will be the average year-to-year variation in actual versus expected results. Also, the lower will be the expected results, assuming different choices have different expectations of performance.
Warren Buffett