Early on Hillary was one of the brightest people around. Years of drug abuse has taken its toll but back in her college days she was one of the few smart enough to recognize how she could use 'Rules For Radicals' to gain power for herself and Bill. She was never going to convince people she wasn't a sociopath, so she hooked up with charming Bill and together they got to the highest office in the land. https://en.wikipedia.org/wiki/Hillary_Rodham_senior_thesis