善济事者,若救水拯溺。明其谋者,犹骥捷矢疾。· He who is good at achieving acts as swiftly as if he were saving a drowning man. He who is good at carrying out a strategy responds to developments as speedily as a galloping horse or a flying arrow.
(Liu Zhou [of Northern Qi in the Northern Dynasties]: The Works of Liuzi)