Big Head, Big Brain
![](https://images.upbeatnews.com/posts/7381/ia8hs3avYLBjx4wNrwXLnnmtDPVs69flK014W6h1.jpeg)
John Quincy Adams had a notoriously large head, most likely so it could hold his high 175 IQ. That's the highest IQ of any president that has ever lived. John Quincy Adams was a lawyer before and after his presidency, and he helped create the legal systems that we still use to this day.
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