

A Small Reminder on Roman NumeralsEarl Morse Wilbur used Roman numerals to enumerate the chapters in his book Out Unitarian Heritage. Just in case you need a refresher, here are the basics:
Notice that a I (one) left of the V (five) means a subtraction of one. A I (one) to the right of the V (five) means an addition of one— 5 plus 1.
A I (one) left of X (10) means subtract one from 10. Also, the maximum number of integers you can put together is three. So:
An X (10) left of L (50) means subtract 10 from 50. But you would never say LLL for 150. 150 is written CL, as this means 100 plus 50. So, MDCCCXXXVIII means 1,000 plus 500, plus 300, plus 30, plus 8; or, 1838. This is perhaps the largest expression for a year you can write in the second millennium that ended in December 2000.
In the new third millennium (which began in January 2001 and will end in December 3000), our years are easy to write:
But who knows if people will know anything about Roman numerals by December 3000.

