Speaker: Srila Prabhupada
Source: Knot Between Matter And Spirit

Therefore two things must go on in parallel lines. One side, a person should cultivate Krsna consciousness and, another side, he should try to give up all the unwanted things. That will help him. You cannot continue both the things. Just like when a person is diseased, he’s given medicine. At the same time, he has to act, not to take this, not to take that. That is the way of treatment. Not that whatever you like, you can eat;