“Knowledge is strength, understanding is mastery, and wisdom is power.”— Matshona Dhliwayo Related Quotes “The really frightening thing about middle age is the knowledge that you’ll grow out of it.”— Doris Day “A jazz musician can improvise based on his knowledge of music. He understands how things go together. For a chef, once you have that basis, that’s when cuisine is truly exciting.”– Charlie Trotter “Metaphors: knowledge existing in several states and without contradiction”— G. Willow Wilson