The aim of this thesis is to study “Metta Sutta” Thought in 10 poems of Thomas Hardy’s Collected Poems, focusing particularly on loving-kindness for all of Nature’s creatures through his poems. Hardy’s only hope is that loving-kindness would spread among all the creatures as well as all the people of the world and we would realize that we are members of one family, one common lot. So the altruism in Hardy’s literary [poetry] world is that the cosmic mercy of Buddhism, which embraces all the life in a respectful and warm manner, should be based on the ‘Morality’ in a world deserted by God. In this way, the discussion on the “Metta Sutta” Thought in Hardy’s 10 poems can be condensed into “the Poetics of Mercy.” Hardy’s poetic world, which had been deviated from the traditional thinking of Christian God, was a way of realizing his will that humanist “Metta Sutta” Thought tried to correspond to the life of the present day as it was. It seems certain that the reality of the suffering of all living things on the ground can be overcome by the mercy at the base of “Metta Sutta” Thought, In this regard, the “Metta Sutta” Thought in Hardy’s poems was an alternative to blind God’s conversion to pursue the desirable life of the present and the future, and it was the practical poetics of Human Salvation.