„All is interrelated. Heaven and earth, air and water. All are but one thing; not four, not two and not three, but one. Where they are not together, there is only an incomplete piece.“

— Paracelsus

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„Water and air, the two essential fluids on which all life depends, have become global garbage cans.“
— Jacques-Yves Cousteau
„When earth meets with fire and is dissolved by the keenness of it, it would drift about, whether it were dissolved in fire itself, or in some mass of air or water, until the parts of it meeting and again being united became earth once more; for it never could pass into any other kind. But when water is divided by fire or by air, it may be formed again and become one particle of fire and two of air: and the divisions of air may become for every particle broken up two particles of fire. And again when fire is caught in air or in waters or in earth, a little in a great bulk, moving amid a rushing body, and contending with it is vanquished and broken up, two particles of fire combine into one figure of air: and when air is vanquished and broken small, from two whole and one half particle one whole figure of water will be composed. Let us also reckon it once again thus: when any of the other kinds is intercepted in fire and is divided by it through the sharpness of its angles and its sides, if it forms into the shape of fire, it at once ceases from being divided…“
— Platón
„"The water in music the oar forsakes." The air in music the wing forsakes. All things move in music and write it. The mouse, lizard, and grasshopper sing together on the Turlock sands, sing with the morning stars.“
— John Muir
„Ah, Mastery of the Five Elements!""Is that the one we want?" I asked."No, but a good one. How to tame the five essential elements of the universe - earth, air, water, fire, and cheese!""Cheese?“
— Rick Riordan
„The true miracle is not walking on water or walking in air, but simply walking on this earth.“
— Thich Nhat Hanh