小大由之 xiǎo dà yóu zhī

xiǎo dà yóu zhī set phrase in things small and great they should be followed
Domain: Idiom 成语
Notes: Quote: from Book 1 學而 Xue Er of the 論語 “Analects of Confucius” (retranslated from Legge 1861, vol. 1, Confucian Analects, p. 7; Guoyu '小大由之')