Known sourcecanonical
"It was a high speech of Seneca (after the manner of the Stoics), that "The good things which belong to prosperity are to be wished, but the good things that belong to adversity are to be admired.""
Francis Bacon / Of Adversity.
Bartlett's Familiar Quotations, 9th ed. (Little, Brown, 1905), public domain
Bartlett's Familiar Quotations, 9th ed. (Little, Brown, 1905), public domain