“How happy is the blameless vestal’s lot!
The world forgetting, by the world forgot.
Eternal sunshine of the spotless mind!
Each pray’r accepted, and each wish resign’d;”
—
“I waste the matin lamp in sighs for thee,
Thy image steals between my God and me,
Thy voice I seem in ev’ry hymn to hear,
With ev’ry bead I drop too soft a tear.”

—

Eloisa to Abelard - Alexander Pope

This, excerpted above, is considered one of the greatest romantic poems, which inspired parts of the film Eternal Sunshine of the Spotless Mind. Click the title for the full text.

It is based on the romance of the two, who in their lifetimes were both renowned scholars. Tragedy and violence ripped them apart, each finding religion after their separation.

Thinking about it, I am not sure what wisdom can be gleaned from their cautionary tale. Sometimes tragedy does not have a point, or a lesson. Both love and despair can exist regardless of whether they mean anything.