Even the most inspired mystic needs technical skill and developed intellect to convey his message adequately to his readers. The more he lacks them, the more inarticulate will he be--no matter how strong his inspiration. The more that adequate experience and competent technique are missing from his equipment, the more will he fail to fulfil his own intention and the less will his readers be able to gather in whatever values he represents to them. To know is one thing; the talent to present what you know is another.
-- Notebooks Category 14: The Arts in Culture > Chapter 2: Creativity, Genius > # 65