侃问：「先儒以心之静为体，心之动为用，如何？」
先生曰：「心不可以动、静为体、用。动、静，时也。即体而言，用在体；即用而言，体在用；是谓体、用一源。若说静可以见其体，动可以见其用，却不妨。」
薛侃问：「先儒以心之静为体、心之动为用，怎么样？」
先生说：「心不可以用动静分体用。动静是时机。从体上说，用就在体中；从用上说，体就在用中；这就是体用一源。若说静时可以看到它的体、动时可以看到它的用，倒也无妨。」
Xue Kan asked: 'Earlier scholars took the mind's stillness as substance and its movement as function. What of it?'
The Master said: 'The mind cannot have its substance and function assigned to stillness and movement — stillness and movement are times. Spoken of as substance, function is within substance; as function, substance is within function: substance and function are one source. To say that in stillness one may see its substance and in movement its function does no harm.'