Plato's ideal city seeks a harmonious balance between its individual parts and should be lead by a philosopher king.
柏拉图理想中的城市追求各个部分的和谐共生,并且应该由一个哲学家国王所统治。
TED-Ed(视频版)
Plato imagined an enlightened republic ruled by philosopher kings, many religions promise bliss in the afterlife, and throughout history, various groups have tried to build paradise on Earth.
Some thinkers have gone on to credit the idea of the noble lie as a prototype for 20th century propaganda, and the philosopher king as inspiration for the dictators that used them.
Sadly the pattern of co-option was broken when the philosopher king Marcus Aurelius left the empire to his biological son Commodus with disastrous results. When Trajan took over the empire in 98 AD he demonstrated strong imperialistic tendencies.
Philosopher kings are the rulers of Plato's utopian city of Kallipolis. If his ideal city-state is to ever come into being, "philosophers [must] become kings…or those now called kings [must]…genuinely and adequately philosophize" (The Republic, 5.473d).