I agree with everyone who posted so far. This statement is worse than nonsense.
How about a more truthful statement like "Most people are average." At least that's statistically correct and in line with the bell curve.
Direct translation for that is "Każdy jest dobry", without "człowiek". (but then, "everyone" always refers to humans, at least right now when there are no aliens or super intelligent animals around, so perhaps everyone should be accepted)