Dangerous Knows Dangerous

Richard Nixon once referred to Timothy Leary as "the most dangerous man in America". Leary, a clinical psychologist and LSD advocate, was a counter-culture hero in the psychedelic 1960's and advised that generation to "turn on, tune in, drop out."

Nixon calling Leary "dangerous" was a proverbial case of "pot, meet kettle".

Legend of a Mind - The Moody Blues