The Art of War by active 6th century B.C. Sunzi

41. He who exercises no forethought but makes light of his opponents is

Chapter 283 38 words
sure to be captured by them. [Ch’en Hao, quoting from the _Tso Chuan_, says: "If bees and scorpions carry poison, how much more will a hostile state! Even a puny opponent, then, should not be treated with contempt."]