" 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. [...] 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