This is the way of Torah: you shall eat a morsel of bread with salt, drink a measure of water, sleep on the ground, and live a life of hardship as you toil in the Torah. If you do this, “Happy shall you be, and it shall be well with you.” (Psalm 128:2)
From “Chapters of the Fathers,” in Gates of Prayer, Chaim Stern, ed. (New York: Central Conference of American Rabbis, 1975), 27.
Matters of Interpretation 