“Knowing is not enough, we must apply. Willing is not enough, we must do.”

Source: Kitchen Confidential: Adventures in the Culinary Underbelly

No published occurrence of such an attribution has yet been located prior to one in Wilhelm Meisters Wanderjahre — Band 3 http://www.gutenberg.org/cache/epub/2411/pg2411.html by Johann Wolfgang von Goethe <br class="br">Disputed <br class="br">Variant: Knowing is not enough; we must apply. Being willing is not enough; we must do.

Source: Life Itself : A Memoir (2011), Ch. 54 : How I Believe In God
Context: Over the high school years, my belief in the likelihood of a God disappeared. I kept this to myself. I never discussed it with my parents. My father in any event was a nonpracticing Lutheran, until a deathbed conversion that rather disappointed me. I’m sure he agreed to it for my mother’s sake. Did I start calling myself an agnostic or an atheist? No, and I still don’t. I avoid that because I don’t want to provide a category that people can apply to me. Those who say that “believer” and “atheist” are concrete categories do violence to the mystery we must be humble enough to confess. I would not want my convictions reduced to a word.

Rousseau http://www.gutenberg.org/files/14052/14052-h/14052-h.htm (1876)

Source: The Dead Zone 1979

1950s, Loving Your Enemies (November 1957)
Context: Somewhere somebody must have some sense. Men must see that force begets force, hate begets hate, toughness begets toughness. And it is all a descending spiral, ultimately ending in destruction for all and everybody. Somebody must have sense enough and morality enough to cut off the chain of hate and the chain of evil in the universe. And you do that by love.