experience
1377, from O.Fr. experience, from L. experientia "knowledge gained by repeated trials," from experientem (nom. experiens), prp. of experiri "to try, test," from ex- "out of" + peritus "experienced, tested." The v. (1533) first meant "to test, try;" sense of "feel, undergo" first recorded 1588.

Comenius: "Let those things that have to be done be learned by doing them."
Friedrich Froebel: "Man only understands thoroughly that which he is able to produce."