No State shall pass any law impairing the [natural] obligation of contracts

No State shall pass any law impairing the [natural] obligation of contracts

Lysander Spooner was a 19th-century American individualist anarchist, political philosopher, and abolitionist who was a staunch advocate for individual rights and limited government intervention in economic affairs. One of the key principles that Spooner believed in was the sanctity of contracts and the importance of upholding the natural obligation of contracts.