All kinds of mental concoction, mental speculation, should be given up. That is the science. That is the beginning of our spiritual life, that "I shall not use my mind for my activities. I shall wait for the direction from the higher authority, supreme consciousness. Then I shall act."

…if we act according to our mental speculation or mental whims, then we are bound up by the reaction. And if we practice ourself to be active under the direction of the Supreme, then we are free. This is the whole art of spiritual life.

>>> Ref. VedaBase => Bhagavad-gita 2.58-59 — New York, April 27, 1966