So

many

people

enter

and

leave

your

life.

Hundreds

of

thousands

of

people.

You

have

to

keep

the

door

open

so

they

can

come

in.

But

it

also

means

you

have

to

let

them

go.

A

Letter

from

Oskar's

Grandmother.

By

Jonathan

Safran

Foer.

Enter