What is the difference between 'Vidya' and 'Avidya' according to the text?

According to the discourse in Chapter 50, 'Vidya' and 'Avidya' represent two opposing attitudes that determine one's state of being. 'Vidya' is described as pure knowledge, embodied by the eternal pulse of 'I am Brahman' and the understanding that 'This Soul is Brahman'. In contrast, 'Avidya' is ignorance, characterized by a negative self-perception such as 'I am a sinner, unfortunate, luckless'. The text explains that these are ancient powers of Maya, where 'Vidya' leads to liberation from bondage, while 'Avidya' is the very source of that bondage for the soul.