Inferiors revolt in order that they may be equal, and equals that they may be superior.

Aristotle (384-322 BC) Greek philosopher

Politics [Πολιτικά], Book 5, ch. 2 / 1302a.29 [tr. Jowett (1885)]
    (Source)

Alternate translations:

• "Now, what they aim at may be either just or unjust; just, when those who are inferior are seditious, that they may be equal; unjust, when those who are equal are so, that they may be superior." [tr. Ellis (1912)]
• "When inferior, people enter on strife in order that they may be equal, and when equal, in order that they may be greater." [tr. Rackham (1932)]
• "The lesser engage in factional conflict in order to be equal; those who are equal, in order to be greater." [tr. Lord (1984)]