Mundaka Upanishad Teachings

The Self is not attained through discourses nor through memorizing scriptural texts, nor through much learning. It is gained only by him who wishes to attain it with his whole heart. To such a one, the Self reveals Its true nature. (Chapter III, Section II:3)

Engrossed in the ways of the ignorant, these people (those who rely on the greatness of rituals and meritorious acts) childishly think that they have gained the end of life. But being subject to passions and attachments, they never attain knowledge, and therefore, they fall down wretched, when the fruits of their good deeds are exhausted. (Chapter I, Section II:9)

These ignorant men, who regard sacrificial and charitable acts as most important, do not know any other way to bliss. Having enjoyed in the heights of heave, the abode of pleasures, they again enter this world or even inferior worlds. (Chapter I, Section II:10)

Mundaka Upanishad