One who is ignorant of scientific knowledge of the spirit soul does not look inside the body to find happiness in the soul; instead, he goes outside to search for happiness
Srimad bhagavatam 7.13.29,
Bhagavad Gita is also known as Gitopaniṣad. It is the essence of Vedic knowledge and one of the most important Upanisads in Vedic literature.
Bhagavad Gita Introduction,
Knowledge of Krishna is such a great gift that it is impossible to repay the benefactor.
Srimad Bhagavatam 4.22.47,
To show them special mercy, I, dwelling in their hearts, destroy with the shining lamp of knowledge the darkness born of ignorance.
Bhagavad Gita 10.11,
Beginning of all knowledge comes from humility.
Whatever knowledge we acquire should be used in Krishna consciousness.