Necessary.

Why do we bother with the rest of the day,

the swale of the afternoon,

the sudden dip into evening,

then night with his notorious perfumes,

his many-pointed stars?

This is the best—

throwing off the light covers,

feet on the cold floor,

and buzzing around the house on espresso—

maybe a splash of water on the face,

a palmful of vitamins—

but mostly buzzing around the house on espresso,

dictionary and atlas open on the rug,

the typewriter waiting for the key of the head,

a cello on the radio,

and, if necessary, the windows—

trees fifty, a hundred years old

out there,

heavy clouds on the way

and the lawn steaming like a horse

in the early morning.

Billy Collins, from "Morning"