
The Diary and Sundry Observations of Thomas Alva Edison (1948), p. 110.
Date unknown
Act II
A Woman of No Importance (1893)
The Diary and Sundry Observations of Thomas Alva Edison (1948), p. 110.
Date unknown
Source: The Sayings and Teachings of the Great Mystics of Islam (2004), p. 82
Health and Education http://www.gutenberg.org/files/17437/17437-h/17437-h.htm, The Science of Health (1874).