in practice

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References in classic literature ?
But it was clear that when he had got through the exuberance of his youth, and was at last qualified, he would be a tremendous success in practice.
Although we usually call reward and punishment the two hinges upon which all government turns, yet I could never observe this maxim to be put in practice by any nation except that of Lilliput.
Most artists have this secret in practice, though some, perhaps, have not much studied the theory.