$chool and kNOwledge

Sam went away to school. A month later, he mailed a letter to his mother:

Dear Mom,

$chool i$ great. I’m making lot$ of friend$ and $tudying hard. I’m acing $pani$h and Economic$, and I $pend hour$ in the $ocial $cience$ department. $ociology i$ intere$ting!

Ju$t off I can’t think of anything I wi$h for, but it would be $uper nice if you could ju$t $end me a card, a$ you know I would alway$ love to hear from you.

Love and ki$$e$,
your $on, $am

His mother wrote back:

Dear Sammy,

I kNOw ecoNOmics, astroNOmy, and oceaNOgraphy are more than eNOugh to keep even an hoNOr student busy. Do NOt forget that the pursuit of kNOwledge is a NOble task, and you can never study eNOugh.

Love, your mom