
Source: Hilkhot De'ot (Laws Concerning Character Traits), Chapter 2, Section 7, p. 33
Shulchan Arukh, Yoreh De'a, 246:21, as cited in "Separation from the Worldly (Perishut)" http://etzion.org.il/en/separation-worldly-perishut
Source: Hilkhot De'ot (Laws Concerning Character Traits), Chapter 2, Section 7, p. 33
“An artisan busies himself with his work for three hours each day and spends nine hours in study.”
Treatise 3: “The Study of the Torah,” Chapter 1, Section 12, H. Russell, trans. (1983), p. 52
Mishneh Torah (c. 1180)
Commentary on Mishlei 23:30, as cited in "Separation from the Worldly (Perishut)" http://etzion.org.il/en/separation-worldly-perishut
Source Book in Ancient Philosophy (1907), The Fragments
Source: The Purpose and Power of Love & Marriage