"The ideal social state is not that in which each gets an equal amount of wealth, but in which each gets in proportion to his contribution to the general stock."

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It is your mind that matters economically, as much or more than your mouth or hands. In the long run, the most important economic effect of population size and growth is the contribution of additional people to our stock of useful knowledge. And this contribution is large enough in the long run to overcome all the costs of population growth.

— Julian Simon