There are two parts- the greatest minds and the most beautiful minds. The great minds are scientists such as infinity minds solving the most intricate problems of Quantum Physics; and the most beautiful in poetry, art and music produce the most beautiful ideas. The first came from Einstein studied by Count Alfred Korzybski in Science and Sanity. Robert Oppenheimer at the Princeton University Institute For Advanced Study told Paul Dirac that he was going to place his portrait beside one of Einstein on a wall and they would be the only people on that wall .The second comes from oceanic poetry and Dr Kathleen Raine's Temenos- her worlds of the Imagination. Both use creative infinity mind and not words.
The greatest ideas and poetry come from the super- conscious, which is manifested in the hissing of the brain, leading to this poetry being called oceanic: eg that of Rumi, Kabir, Suhrawardi. In India it is named Kundalini; in the Mediterranean the Mystery Ceremonies held in caves where the leaders used the hissing Syrinx-Greek pan pipe, which trained students that the leaders thought were being turned into gods.