Knowledge is the exposure, acquisition, and retention of information. It is the diving board from which intelligence and wisdom can splash into existence. Think Trivial Pursuit, Jeopardy.
Intelligence is the manipulation of knowledge. It is the innovative and theoretical application of information. Think Einstein, Marie Curie.
Wisdom is the mystical fusion of intelligence and knowledge. It is a kind of sublime understanding of life and its mysteries. Think Socrates, Mahatma Gandhi.