by His Divine Grace A.C. Bhaktivedanta Swami Prabhupāda

As long as we have the desire for material sense gratification or the desire for material liberation there is no possibility of developing transcendental bliss in Krsna consciousness. Bhukti is the desire for material sense gratification, and mukti is the desire, after being frustrated, for liberation. Real mukti or liberation however, means to achieve devotional service. If one becomes liberated from nonsense then one must engage oneself in something which is tangible. Otherwise it is not possible to stop one's material sense gratificatory activities. To make the mind void of engagement in the material world by intoxication or by forgetting with drugs is artificial. One must be completely free from material engagement. That freedom can be possible. To give a material example, if one fills up a glass with milk, then there is no possibility of the glass's filling up with ink. It is our choice whether to fill up the glass with ink or milk. But if we simply empty the glass of ink and do not fill it up, or if we have no knowledge how to fill the glass with milk, then naturally, in an inky atmosphere, there is the possibility that it will again become filled with ink. Even if we empty the glass of ink, if we have no better quality of liquid with which to fill the glass, then it well be prone to being filled with ink again. Therefore, this impersonal void philosophy does not stand. It is simply negation. Impersonalists wish to cease material activities, but if they do not take on positive, spiritual activity, then they will fail because they will not be able to control their minds.

In the Bhagavad-gita it is stated that the mind cannot be vacant even for a second. The mind must accept something and reject something. Either one is accepting something or rejecting something but one cannot make the mind void. And even if one is able to do so that voidness will not stand. If one has nothing good to think then one will have to think of all nonsense. And when we fill up our minds with Krsna consciousness we will not be distracted by material sense gratification or material liberation.