We rest. — A dream has power to poison sleep;
We rise. — One wandering thought pollutes the day;
We feel, conceive or reason, laugh or weep;
Embrace fond woe, or cast our cares away: It is the same! — For, be it joy or sorrow,
The path of its departure still is free:
Man's yesterday may ne'er be like his morrow;
Nought may endure but Mutability.

Mutability (1816), st. 4.