"There are three things extremely hard: steel, a diamond, and to know one's ___.": Poor Richard's Almanack
Crossword clue · 1 known answers · 1 appearances · Last seen in the New York Times crossword on March 24, 2026
Latest answer · Verified
SELF
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About this clue
The clue “"There are three things extremely hard: steel, a diamond, and to know one's ___.": Poor Richard's Almanack” has appeared 1 times in our database with 1 different answers, so count the squares in your grid and check the crossings before you commit. Most recently it ran in the New York Times crossword on March 24, 2026, where the answer was SELF.