"He who bears in his heart a cathedral to be built is already victorious. He who seeks to become sexton of a finished cathedral is already defeated."

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It doesn't matter if people are playing jazz or writing poetry. If they want to be successful, they need to learn how to persist and persevere and keep on working until the work is done... I bet there isn't a single highly successful person who has not depended on grit. Nobody is talented enough to not have to work hard, and that's what grit allows you to do.

— Jonah Lehrer