Ancient Etymology: The Ancient Roman or Ancient Greek Litmus Test

The website that I use more than Google is Typically what I do is this;

When there is a word, a concept or thing that I’m curious about, I go to and I study the history or the etymology of it.

Why is this so beneficial? It gives me a greater clarity about the concept or thing, for example when studying the notion of “finance“; discovering that ultimately it just means finish. Therefore, maybe the wise way to think about an approach to finance is to think about the end?