This volume includes a reworking of the landmark essay "Introduction to the Study of Practical Wisdom," and new material drawn from notes and schemata.
Gallagher had served in the United States Army Air Corps from 1943 to 1946. He began working at Fordham University in 1955, where he taught courses on Christian existentialism, human nature, and epistemology.
He studied German at the Goethe-Institut in the mid-1960s and, after, translated German poetry for the literary periodical The Formalist.
He was particularly interested in the works of Søren Kierkegaard, Plato, and the French Catholic philosopher Gabriel Marcel.