What kind of attachments and mindsets are considered obstacles to attaining true knowledge?

According to the teachings in Chapter 50, certain attachments and mindsets effectively turn knowledge into ignorance. A person whose mind is fixated on wealth, luxury, and is insatiable in sense enjoyment is considered to be in a state of ignorance. Constantly thinking of and being attached to one's wife and sons also obscures true knowledge. The text states that such a person, deluded by money, children, and wife, does not know their own welfare, even if they are considered 'wise' by worldly standards. As long as a person is without devotion, their knowledge remains covered by ignorance.