Isidor's Etymologies

Isidor's etymologies can't exactly be described as a work of philosophy, but there is quite a bit of philosophy in it. He goes through the basics of logic echoing the ancient approach to the subject by summarizing Porphyry's Isagoge and Aristotle's logical works. To some extent we can also see Isidor's whole project as a philosophical or scientific one - he is not just telling us where words come from, he is teaching us what they mean. It is reminiscent of far older philosophical works, for example Plato who told a similar story about etymology and its significance in his Cratalus.