“The man who fears to be alone will never be anything but lonely, no matter how much he may surround himself with people. But the man who learns, in solitude and recollection, to be at peace with his own loneliness, and to prefer its reality to the illusion of merely natural companionship, comes to know the invisible companionship of God. Such a one is alone with God in all places, and he alone truly enjoys the companionship of other men, because he loves them in God in Whom their presence is not tiresome, and because of Whom his own love for them can never know satiety.”
Thomas Merton wrote more than 70 books, mostly on spirituality, as well as scores of essays and reviews. Merton was a keen proponent of interfaith understanding.
Interest in his work contributed to a rise in spiritual exploration beginning in the 1960s and 1970s in the US. Merton's letters and diaries, reveal the intensity with which their author focused on social justice issues, including the civil rights movement and proliferation of nuclear arms. He had prohibited their publication for 25 years after his death. Publication raised new interest in Merton's life.