Who said "The consciousness of doing right is an ample reward."?

This quote is attributed to Ann Radcliffe.

The consciousness of doing right is an ample reward. - Ann Radcliffe

"The consciousness of doing right is an ample reward."

Ann Radcliffe

Novelist English 1764–1823

"In a world deceptive and full of snares, who can be trusted but those we have known from childhood?"

"Fear is the tax that conscience pays to guilt."

"The pleasures of the imagination are as real as any others."

"Inquiry is fatal to certainty."