The philosopher and naturalist Theophrastus of Eresos succeeded Aristotle as head of the Peripatetic school; and while he may not have had his predecessor’s visionary profundity, he more than compensated for this with a genial manner, relentless curiosity, and a genius for organization. Like the Prussian naturalist Alexander Von Humboldt, there was nothing in the heavens or on the earth that escaped his attention; and his exhaustive botanical treatise, the Historia Plantarum (Study of Plants) remained an authority in the field until well beyond the medieval period.
Quintus Curtius 
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