"There is no substitute for knowledge, self-knowledge, or a metaphysical understanding of the score and one's relationship to it; and no amount of talent or even training can compensate for the lack of all these elements. 'Man thinks,' says Spinoza, and this thinking is the result of a dialogue between the intellect, the emotions and the intuition. This is not only true of the thinking of each individual, but of groups of people and even of nations."