क्षुध् तृट् आशा: कुटुम्बिन्यो मयि जीवति न अन्यगा: |
तासाम् आशा महासाध्वी कदाचित् मां न मुञ्चति ||
Hunger, Thirst and desire are like man's three wives. Until he is alive these three will never leave him or go else where. In comparison of the three, desire is a 'MahaSaadhvi' because it NEVER EVER leaves the man. Unlike hunger and thirst which disappear for some time after eating /drinking, desire is the thing which never disappears from man's mind!!