This chapter critically examines the shift from Liberation Theology to Ecotheology, primarily through the work of its most prominent proponent, Leonardo Boff. It begins by recalling Hugo Assmann’s foundational principle for LT: that theology’s function is to give reason to the hope forged in the concrete praxis of a believing community. The chapter then critiques Boff’s ecotheology, arguing that it inverts this principle. Boff’s framework posits a “paradigm crisis” in modernity—a split between nature and society—and proposes a new ecological paradigm as the solution. The function of theology, then, becomes to inform Christians about this new paradigm in the expectation that it will produce a new ethical praxis. The author concludes that this move, which replaces the “cry of the poor” with the “cry of the Earth,” forgets the basic novelty of LT and reverts to a preliberationist model where theology dictates ethics from above, rather than reflecting them from below.