It is possible that both quotes are cases of "convergent evolution" if you will and both are correct. Given how many people there are I don't think its unheard

It is possible that both quotes are cases of "convergent evolution" if you will and both are correct. Given how many people there are I don't think its unheard of for two people to arrive at the same idea despite one being much older. That or he never attributed it, and speakers of only English attribute the phrase to his first use because of it.