Memory card — print it, then learn it by heart. The paper doesn't need charging.

Invictus
William Ernest Henley · 1875
Stanza I
1Out of the night that covers me,
2Black as the pit from pole to pole,
3I thank whatever gods may be
4For my unconquerable soul.
Stanza II
5In the fell clutch of circumstance
6I have not winced nor cried aloud.
7Under the bludgeonings of chance
8My head is bloody, but unbowed.
Stanza III
9Beyond this place of wrath and tears
10Looms but the Horror of the shade,
11And yet the menace of the years
12Finds and shall find me unafraid.
Stanza IV
13It matters not how strait the gate,
14How charged with punishments the scroll,
15I am the master of my fate,
16I am the captain of my soul.