Protagoras

"Man is the measure of all things, of what is and that it is. Of what is not and that it is not,” said Protagoras.
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Hippocrates

“It is more important to know what sort of person has a disease than to know what sort of disease a person has,” said Hippocrates, renowned to date as the Father of Modern Medicine and as the author of the Hippocratic Oath- taken by physicians worldwide, before entering active practice.
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Hippias

“Just as those who drink, after they have quenched their thirst, begin then to observe the ornamentation of the drinking-cups and to turn them about, so the young man, when he is satisfied,” said Hippias of Elis.
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