《管子·枢言》
要加快进行探索，因为万物是众多的；要努力进行探索，因为万物是随时流逝的；要加强进行探索，因为万物是意旨精深的。
疾之疾之，万物之师也。为之为之，万物之时也。强之强之，万物之指也。
Explore more quickly, because all things are numerous; Strive to explore, because everything flows with time; Strengthen exploration, because everything has a profound meaning.