Leary's exhortation to 'Tune In' meant to interact harmoniously with the world. Leary and the many merry pranksters of the 60's practiced and studied the universial truths as spoken by the great teachers of all cultures down through time. All sought immersion in the 'one' and to recognize that paradise is here and now in the miracle of the moment.
"The Goddess in all her manifestations was a symbol of the unity of all life in Nature. Her power was in water and stone, in tomb and cave, in animals and birds, snakes and fish, hill, trees, and flowers." - Marija Gimbutas
The 60's were a time of exhileration, revolution was on the tongue, change was in the air. Some challenged the politics of war, some challenged ridicoulous racism, some were feminists challenging the male dominated culture, some used psychedelics and pot to open their doors of perception. Leary's message was to use the glimpses of that greater reality afforded while bypassing the petty tyrannt of our conditioned veil to bootstrap ourselves beyond the illusion of duality and toward the illumnation of our immersion in the ground of being.
Every seed is awakened and so is all animal life. It is through this mysterious power that we too have our being and we therefore yield to our animal neighbours the same right as ourselves, to inhabit this land. -Sitting Bull