Any recursively enumerable set which is also co-recursively enumerable is a decidable set.

On Boxing day, December 26th, 1902, the sixth grand annual pantomime, Jack & the beanstalk

Pretty soon I struck into a sort of path […]. It twisted and turned,[…]and opened out into a big clear space like a lawn. And, back of the lawn, was a big, old-fashioned house, with piazzas stretching in front of it, and all blazing with lights. 'Twas the house I'd seen the roof of from the beach.

In the begynnynge was that worde / ãd that worde was with god : and god was thatt worde.