A Most Important Discovery (1953)

TIL that Francis Crick's 12-year-old son Michael, to whom this remarkably clear letter is addressed, started out studying neuroscience at Harvard, but met the computer, ended up writing computer games, and lives in Seattle. (http://crick.com/gamemaster.html)

The computer is really quite a captivating thing.

I think Watson and Crick's letter to Nature ends with the best sentence of the 20th Century:

"It has not escaped our notice that the specific pairing we have postulated immediately suggests a possible copying mechanism for the genetic material."