 Many traditional western ethical perspectives, however, are anthropocentric or human-centered in that either they assign intrinsic value to human beings alone (i.e., what we might call anthropocentric in a strong sense) or they assign a significantly greater amount of intrinsic value to human beings than to any non-human things such that the protection or promotion of human interests or well-being at the expense of non-human things turns out to be nearly always justified (i.e., what we might call anthropocentric in a weak sense). For example, Aristotle (Politics, Bk. 1, Ch. 8) apparently maintains that “nature has made all things specifically for the sake of man”. Such purposive or teleological thinking may encourage the belief that the value of non-human things in nature is merely instrumental. It is difficult for anthropocentric positions to articulate what is wrong with the cruel treatment of non-human animals, except to the extent that such treatment may lead to bad consequences for human beings. Immanuel Kant (“Duties to Animals and Spirits”, in Lectures on Ethics), for instance, suggests that cruelty towards a dog might encourage a person to develop a character which would be desensitized to cruelty towards humans. From this standpoint, cruelty towards non-human animals would be instrumentally, rather than intrinsically, wrong. Likewise, anthropocentrism often recognizes some non-intrinsic wrongness of anthropogenic (i.e. human-caused) environmental devastation. Such destruction might damage the well-being of human beings now and in the future, since our very existence and well-being is essentially dependent on a sustainable environment. This argument was made in the previous century (see Passmore 1974; Bookchin 1990; Norton et al. (eds.) 1995), and seems subsequently to have garnered wide public support (see the results of surveys in Pew 2018).