“Constitutional humanity” is a materialist stance regarding human persons. It is an anthropological position that stands counter the normal idea that people have “souls.” At the same time, it is a position striving to avoid better or worse a materialist reductionist stance. Such would teach people are only material accidents. Corcoran is a theist; overall, he is closer to “scientism” than the popular Thomas Negel a secularist who also seeks a reductionist alternative but favors telic arguments.
The Greek words for soul and spirit are very diverse in that they have a wide range of meanings that often gets lost in translation.
Oscar Cullman in his book, “Immortality of The Soul or Resurrection of The Dead?” explored if we should see death as friend or as an enemy. By comparing and contrasting the ancient world view of Socrates with the Gospel narratives he came up with an answer that might surprise you!