Mbh 12.142.2c

In days of old, Usanas said unto the Daityas this truth, which should remove all doubts, that scriptures are no scriptures if they cannot stand the test of reason. The possession or absence of knowledge that is mixed with doubts is the same thing. It behoves thee to drive off such knowledge after tearing it up by the roots. He who does not listen to these words of mine is to be regarded as one that has suffered himself to be misled. Dost thou not see that thou wert created for the accomplishment of fierce deeds? Behold me, O dear child, how, by betaking myself, to the duties of the order of my birth, I have despatched innumerable Kshatriyas to heaven! There are some that are not delighted with me for this. The goat, the horse and the Kshatriya were created by Brahman for a similar purpose (viz., for being useful to everybody). A Kshatriya, therefore, should incessantly seek the happiness of all creatures. The sin that attaches to killing a person that should not be killed is equal to that which is incurred by not killing one who deserves to be killed. Even such is the established order of things which a weak-minded king thinks of never attending to. Therefore, a king should display severity in making all his subjects observe their respective duties. If this is not done, they will prowl like wolves, devouring one another. He is a wretch among Kshatriyas in whose territories robbers go about plundering the property of other people like crows taking little fishes from water. Appointing high-born men possessed of Vedic knowledge as thy ministers, do thou govern the earth, protecting thy subjects righteously. That Kshatriya who, ignorant of the established customs and contrivances, improperly levies taxes upon his people, is regarded as a eunuch of his order. A king should be neither severe nor mild. If he rules righteously he deserves praise.