Nitpicking on the history listed on the page - Seth was not the forefather of the human race. Adam and Eve had other children who are not named, as mentioned in Genesis 5:6. Wow I sound like such a religious nut, I swear I'm not! [noted -ed]
In the Bible, the name Seth literally means "substitute," as he was given by God to Adam and Eve, when their sons Cain and Abel were both disqualified as the carrier of the promised seed.
― Anonymous User 11/16/2006
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Actually Seth means "substitute" from Hebrew because Cain killed his brother Abel and God cursed Cain for it. Eve said that she would name her child Seth because he was a substitute or replacement for her first two sons.