Definition
The Mandate of Heaven is a Chinese political and religious doctrine holding that a ruler's right to govern is granted by Heaven — a divine cosmic order. As long as a ruler governs well and justly, the mandate is secure. If a ruler becomes cruel, corrupt, or incompetent, Heaven may withdraw the mandate and pass it to someone worthier.
The doctrine first appeared under the Zhou dynasty, which used it to explain why it had been right to overthrow the previous Shang rulers. It then became a lasting feature of Chinese political thought for the rest of the imperial era.
Why it matters
How it works
The Mandate of Heaven created a feedback loop between rule and legitimacy. A new dynasty claimed the mandate by virtue of its success and its promise of good government. As long as the realm prospered, the claim held.
When a dynasty declined into misrule and the people suffered, observers concluded that Heaven was withdrawing its support. Rebellion and conquest followed, and whoever finally won the throne was said to hold the mandate in turn. This cycle of dynastic rise and fall became the standard way to understand Chinese history.