- Author: Santayana George
- Language: English
- Year: 1927
- Author: Santayana George
- Language: English
- Year: 2009
- Author: Santayana George
- Language: English
- Year: 2011
- Author: Dante Alighieri, Goethe Johann Wolfgang von, Lucretius Carus Titus, Santayana George
- Language: English
- Year: 2009
- Author: Alexander Thomas M., Buchler Justus, Dewey John, Putnam Hilary, Rorty Richard, Santayana George
- Language: English
- Year: 2013
- Author: Singer Irving, Santayana George
- Language: English
- Year: 2000
- Author: Santayana George
- Language: English
- Year: 1944
- Author: Santayana George
- Language: English
- Year: 1945
- Author: Santayana George
- Language: English
- Year: 1953
- Author: Santayana George
- Language: English
- Year: 1925