Oscar Wilde said this quote

It is sometimes said that the tragedy of an artist's life is that he cannot realize his ideal. But the true tragedy that dogs the steps of most artists is that they realize their ideal too absolutely. For, when the ideal is realized, it is robbed of its wonder and its mystery, and becomes simply a new starting point for an ideal that is other than itself. This is why music is the perfect type of art. Music can never reveal its ultimate secret.