“In man there is a love, a pain, an itch, and a desire such that, if a hundred thousand worlds were to become his property, he would still gain no rest or ease.
These people occupy themselves thoroughly with every kind of craft, skill, and position; they learn astronomy, medicine, and other things, but they do not find ease, since their goal has not been attained. After all, the Beloved is called “heart’s ease,” since the heart finds ease through Him. So how could it find ease and peace through others?”
(from The Sufi Path of Love -The Spiritual Teachings of Rumi by William C. Chittick)