Say, lordly Man, of pow'rs possest,
That no inferior creatures know;
Say, can the mind with reason blest,
Relentless fury show.
To thy domain all beasts belong,
Yet why so merciless thy sway?
Why to the harmless, useful throng,
Such cruelty display?
Let all thy kind compassion share,
Through Nature's universal frame;
Whatever breathes thy kindred air,
Or feels the vital flame.

On Cruelty to Animals (1789), from Genuine Poetical Compositions, on Various Subjects (1791)