Error is a hardy plant; it flourisheth in every soil;
In the heart of the wise and good, alike with the wicked and foolish;
For there is no error so crooked, but it hath in it some lines of truth;
Nor is any poison so deadly, that it serveth not some wholesome use.

Martin Farquhar Tupper (1810-1889) English poet

“Of Truth in Things False,” Proverbial Philosophy (1838-49)