Plato and Platonism

Heraclitus, thirdly, author of the doctrine of "the Perpetual Flux"

Plato's stand against any philosophy of motion

Panta chôrei kai ouden menei.+ All things give way: nothing remaineth.

eclectic or syncretic method

the historic method

the dogmatic method of criticism

Natura nihil facit per saltum

Philosophy itself, mental and moral, has its preparation, its forethoughts, in the poetry that preceded it.