| Author Quoted | Paul Tillich |
| Title Quoted | Protestant Era |
| Date (Year/Month/Day) | 1961/10/29 |
| Imprint | Chicago : Chicago University Press. 1948 |
| Quotation | "The key to the interpretation of history is historical activity," says Tillich. One of the statements that reflects a Marxist influence. But I agree. |
| Journal | Turning Toward the World: The Pivotal Years. The Journals of Thomas Merton, Volume 4, 1960-1963.; Edited by Victor A. Kramer. / San Francisco : Harper Collins. 1996, p. 174 |
| Link to Merton's Copy |
|