“Play is the only way the highest intelligence of humankind can unfold.”– Joseph Chilton Pearce Related Quotes “To be able to fill leisure intelligently is the last product of civilization.”– Arnold J. Toynbee “Perhaps measuring animal intelligence by comparing it to human intelligence isn’t the best litmus test.”– Ingrid Newkirk “If you are going to have to play defense all the time, you cannot have the kind of ingenuity, assertiveness, independence, and intelligence which is what has made our country strong.”– Arlen Specter