Salt is both simple and complex. An ionic compound of sodium and chloride, it is easy to produce. Salt’s complexity arises from its importance to civilizations, its value and role in human health, and food preservation. Societies prospered and failed because of it, and wars were fought over who would control the salt. Today it is a commodity easily and cheaply obtained.
Our value as human beings has been compared to salt. Someone highly regarded is said to be “worth their weight in salt” and someone of integrity is considered a “salt of the earth.” The all-important word, “salary” comes from the word salt.