老子 Traditional form: 老子 Pinyin (reading): Lǎozǐ Definitions: Laozi or Lao-tze (c. 500 BC), Chinese philosopher, the founder of Taoism the sacred book of Daoism, 道德經/道德经 ( Dàodéjīng) by Laozi Characters: 老 - old, aged; experienced 子 - son, child; seed, egg; fruit; small thing Traditional characters: 老 - old, aged; experienced 子 - son, child; seed, egg; fruit; small thing