I don't have examples in my life of people who are all good or bad; I have deeply loved many people who are both, and I relate to those kinds of people on a far greater level.
There's a fine line between being sweet and innocent and being a tough broad.
The radical novelty of modern science lies precisely in the rejection of the belief, which is at the heart of all popular religion, that the forces which move the stars and atoms are contingent upon the preferences of the human heart.