Lucy Cooke, author of A Little Book of Sloth and The Power of Sloth, wrote this awesome article for The Idler: http://idler.co.uk/article/lucy-cooke-on-the-amazing-sloth/
It wasn’t until the seventeenth century, after years of arguing, the Holy powers-that-be finally decided on its definitive top seven sins. And sloth snuggled in at number four…
It was thanks to celebrated French naturalist Georges Buffon that the moniker really stuck, when he became the first person to scientifically describe the sloth in 1749: ‘Slowness, habitual pain, and stupidity are the results of this strange and bungled conformation. These sloths are the lowest form of existence. One more defect would have made their lives impossible.’
It’s lucky the sloth is such an affable chap. And doesn’t read or speak French because, if he did, I’m sure that even he would struggle to swallow such slurs without a (very slow) fight.