墨翟

Mo Di founded 墨家, Mohism, the rationalist counterweight to Confucianism in the Warring States period. Core doctrines: 兼爱 'impartial care for all,' 非攻 'condemnation of offensive war,' and a thrifty, anti-ritualist ethic. Mohists were also pioneer logicians and military engineers - the school faded after the Qin unification but their texts survive in 《墨子》.

翟 is a less common character - picture it as 'feather + bird,' literally a long-tailed pheasant. So Mozi's birth name 墨翟 is roughly 'Ink Pheasant.'