Readers may be divided into four classes:
1. Sponges, who absorb all that they read
and return it in nearly the same state,
only a little dirtied.
2. Sand-glasses, who retain nothing
and are content to get through a book
for the sake of getting through time.
3. Strain-bags, who retain merely the dregs
of what they read.
4. Mogul diamonds, equally rare and valuable,
who profit by what they read,
and enable others to profit by it also.
~ Samuel Taylor Coleridge
Thank you to all you diamonds who have enriched me.