Mahabharata 5.40.2

5.40.2

mahāntamapyarthamadharmayuktaṃ yaḥ saṃtyajatyanupākruṣṭa eva |
sukhaṃ sa duḥkhānyavamucya śete jīrṇāṃ tvacaṃ sarpa ivāvamucya || 2 ||

"Vidura said, 'Worshipped by the good and abandoning pride, that good man who pursueth his objects without outstepping the limits of his power, soon succeedeth in winning fame, for they that are good, when gratified with a person, are certainly competent to bestow happiness on him. He that forsaketh, of his own accord, even a great object owing to its being fraught with unrighteousness, liveth happily, casting off all foes, like a snake that hath cast off its slough. A victory gained by an untruth, deceitful conduct towards the king, and insincerity of intentions expressed before the preceptor,--these three are each equal to the sin of slaying a Brahmana. Excessive envy, death, and boastfulness, are the causes of the destruction of prosperity. Carelessness in waiting upon preceptor, haste, and boastlessness, are the three enemies of knowledge. Idleness, inattention, confusion of the intellect, restlessness, gathering for killing time, haughtiness, pride, and covetous ness,--these seven constitute, it is said, the faults of students in the pursuit of learning. How can they that desire pleasure have knowledge? Students, again, engaged in the pursuit of learning, cannot have pleasure. Votaries of pleasure must give up knowledge, and votaries of knowledge must give up pleasure. Fire is never gratified with fuel (but can consume any measure thereof). The great ocean is never gratified with the rivers it receives (but can receive any number of them).