Lewis Carroll
I have a fairy by my side
Which says I must not sleep,
When once in pain I loudly cried
It said "You must not weep"
If, full of mirth, I smile and grin,
It says "You must not laugh"
When once I wished to drink some gin
It said "You must not quaff".
When midnight mists are creeping,
And all the land is sleeping,
Around me tread the mighty dead,
And slowly pass away.
Lo, warriors, saints, and sages,
From out the vanished ages,
With solemn pace and reverend face
Appear and pass away.