Underneath his sweetness and gentleness was the heat of a volcano. [Michael Faraday] was a man of excitable and fiery nature; but through high self-discipline he had converted the fire into a central glow and motive power of life, instead of permitting it to waste itself in useless passion.
John Tyndall, Faraday as a Discoverer
discipline, faraday, michael-faraday, nature, passion, science