Mo-ti, or Mo-tzu, was a Chinese philosopher whose doctrine of universal love challenged Confucianism for a considerable time during China's history.

Mo-ti was first a Confucianist but became increasingly attracted for a life of simplicity. His ideas challenged the special claims of parental authority.

Mo-ti developed the idea of an utopian state, and he also introduced logical systems into Chinese philosophy.

He was a philosopher who lived in China during the Hundred Schools of Thought period (early Warring States Period). He founded the school of Mohism and argued strongly against Confucianism and Taoism.

During the Warring States Period, Mohism was actively developed and practiced in many states, but fell out of favour when the legalist Ch'in Dynasty came to power. During that period many Mohist classics were ruined when Shi Huang-ti carried out the burning of books and burying of scholars.

The importance of Mohism further declined when Confucianism became the dominant school of thought during the Han Dynasty, disappearing by the middle of the Western Han Dynasty .