• When written in all caps, the title of John Hiatt’s song “Have a Little Faith in Me” contains no curves.
• Tycho Brahe kept a tame elk.
• It isn’t known whether the sum of π and e is irrational.
• Abraham Lincoln, Andrew Johnson, Ulysses Grant, and James Garfield died without wills.
• “Selfishness is one of the qualities apt to inspire love.” — Nathaniel Hawthorne

The medieval Latin riddle In girum imus nocte et consumimur igni (“We enter the circle at night and are consumed by fire”) is a palindrome. The answer is “moths.”