Authors:

Gentleness, Virtue, Wisdom, and Endurance, These are the seals of that most firm assurance Which bars the pit over Destruction's strength; And if, with infirm hand, Eternity, Mother of many acts and hours, should free The serpent that would clasp her with his length; These are the spells by which to reassume An empire o'er the disentangled doom.

Percy Bysshe Shelley (1820). “Prometheus Unbound: A Lyrical Drama in Four Acts with Other Poems”, p.152
Gentleness, Virtue, Wisdom, and Endurance, These are the seals of that most firm assurance Which bars the pit over Destruction's strength; And if, with infirm hand, Eternity, Mother of many acts and hours, should free