" Islam calls that ’the roots of heaven.’ and to the Mexican Indians it is the 'tree of life' — the thing that makes both of them fall on their knees and raise their eyes and beat their tormented breasts. A need for protection and company, from which obstinate people like Morel try to escape by means of petitions, fighting committees, by trying to take the protection of species in their own hands. Our needs for justice, for freedom and dignity— are roots of heaven that are deeply embedded in our hearts, but of heaven itself men know nothing but the gripping roots ... "

― Romain Gary , The Roots of Heaven