| title | ISBN-13 | year of publication |
|---|---|---|
| Faith's certainties | 978-1-131-13472-7 | 2011 |
| Ourselves and the universe: studies in life and religion | 978-1-131-15822-8 | 2011 |
| Problems of Living | 978-1-143-21661-9 | 2010 |
| Studies of the Soul: -1901 | 978-1-112-31056-0 | 2009 |
Cornell University Library · Nabu Press · The New York Public Library