Acharya Prashant begins by stating that knowledge is dangerous, and self-knowledge is even more so. He clarifies that it is not that humans are incapable of looking at the source of their thoughts, emotions, and actions, but rather that they are unwilling. This unwillingness is because temptations are so powerful, and our taste buds have been totally spoiled. We are unwilling because the pleasure, like a tempting sweet, is too great to resist. To illustrate this, he explains that some people will not even look at the expiry date of their favorite food items, because that knowledge might mean they have to dispose of the item. They prefer to remain blind and just eat it. This points to a larger principle: certain pleasures can only be experienced in blindness, which is why so much blindness exists. Pleasure necessitates blindness. This is also why teaching is so difficult; it is not that people cannot understand, but that they do not want to understand. They have a great interest in not understanding. For most people, it is not ignorance that is dangerous, but understanding. The speaker notes the paradox that people know understanding is dangerous, which implies they also know they are living in a 'sandcastle' or a 'city of delusion.' This is why those living in darkness are so afraid of the light. It is counter-intuitive; one would think someone in darkness would pray for light, but instead, they are mortally scared of it. Ultimately, this is a conflict where love gets trumped by habit. Man has a love for light but is habituated towards darkness, and habit defeats love. A saint is defined as someone whose love is greater than their habit. Since everyone has a love for light and is born habituated towards darkness, the decisive question for each person is whether they will let love or habit win.