“Mathematics has given economics rigor, but alas, also mortis.” — Robert Heilbroner
(I’m such a dope! The word “rigor” is fairly common, but not so much “mortis”, so I had to look it up. And, when you look it up it comes up as part of rigor mortis! Very clever, Mr. Heilbroner! And, welcome to the Cryptoquote Club! This quote would have been a more difficult solve without the author’s first name. None of the words end in E, and there are only three E’s in the entire quote! That’s a little uncommon. Be well and do good friends.) — YUR
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Unclerave's Wordy Weblog 
This one really had me scratching my head until I saw “ROBERT.” That was the key to it all. (Though when I got MORTIS, I was sure something was amiss.)