The Supreme Personality of Godhead has no material birth, activities, name, form, qualities or faults. To fulfill the purpose for which this material world is created and destroyed, He comes in the form of a human being like Lord Rama or Lord Krsna by His original internal potency. He has immense potency, and in various forms, all free from material contamination, He acts wonderfully. He is therefore the Supreme Brahman.
Srimad Bhagavatam 8.3.8-9
Taking medicine without Doctor’s prescription is foolishness. Similarly reading sastra without genuine guru is ignorance.
The complication of materialistic life is due to an uncontrolled mind and uncontrolled senses. The animal cannot control his senses, whereas the human being has the sense of decency & can control himself. By controlling the senses, one can understand the position of his self, the Supersoul, the world and their interrelation. Otherwise, we are no better than animals.