We too often forget that not only is there "a soul of goodness in things evil," but very generally also, a soul of truth in things erroneous.
Pt. I, The Unknowable; Ch. I, Religion and Science; quoting from "There is some soul of goodness in things evil / Would men observingly distil it out", William Shakespeare, Henry V, act iv. sc. i. - First Principles (1862)