Mahabharata 3.198.41

3.198.41

priye nātibhṛśaṃ hṛṣyedapriye na ca saṃjvaret |
na muhyedarthakṛcchreṣu na ca dharmaṃ parityajet || 41 ||

Gift of food to the best of one's power, endurance of heat and cold, firmness in virtue, and a regard and tenderness for all creatures,--these attributes can never find place in a person, without an innate desire being present in him of separating himself from the world. One should avoid falsehood in speech, and should do good without solicitation. One should never cast off virtue from lust, from wrath, or from malice. One should never joy immoderately at a good turn or grieve immoderately at a bad one. One should never feel depressed when overtaken by poverty, nor when so overtaken abandon the path of virtue. If at any time one doth what is wrong, he should never do its like again. One should always urge his soul to the doing of that which he regardeth as beneficial. One should never return wrong for wrong, but should act honestly by those that have wronged him. That wretched man who desireth to do what is sinful, slayeth himself. By doing what is sinful, one only imitates them that are wicked and sinful, Disbelieving in virtue they that mock the good and the pure saying, 'There is no virtue' undoubtedly meet with destruction. A sinful man swelleth up like a leather bag puffed up with wind. The thoughts of these wretches filled with pride and folly are feeble and unprofitable. It is the heart, the inner soul, that discovereth the fool like the sun that discovereth forms during the day. The food cannot always shine in the world by means of self-praise.