I think:
the pinnacle of human wisdom was achieved by Heraclitus,
the pinnacle of human understanding by Buddha,
the pinnacle of human insight by Darwin,
and the pinnacle of human knowledge by Einstein.

Heraclitus:
all is change; character is fate.

Buddha:
liberation to a fulfilling life is gained by moderation in all things.

Darwin:
species of life that evolve in response to changes of environment, survive.

Einstein:
matter-energy and space-time are unified by a mutual relativity.

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