The paradox of human behaviour is that, having the power of discrimination to identify good and bad, man is not able to get away from bad pursuits. This is due to the weakness of the human mind, which is in turn the result of desire and anger. Take the example of Ravana, who was a great scholar and master of many arts.

Ravana looked at Sita with a bad vision. The eye is a sacred organ. Good vision generates good thoughts. In Ravana, the bad look created bad thoughts, which led to his downfall. (SSS Vol.26, p. 127)