A devotee asked me how could someone serve Krishna if his body is paralyzed. "There are no impediments to devotional service. Even in the most difficult situation, a devotee has the ability to desire. Desiring to serve Krishna is all that is required if we wish to advance in Krishna consciousness. I am talking about the sincere desire to remember and serve the Lord. So we serve first by desire, not by our physical body. Therefore Srila Prabhupada explained that no material force can impede devotion. If we actually have the desire to serve Krishna, then whatever is within our ability, we can offer. If we are unable due to physical circumstances to render outward service, we can inquire, speak about Krishna, and hear. Hearing and chanting never stops. Our ability to continue hearing and chanting even under difficult circumstances will depend on our desire. How much do we want to use whatever strength we have to speak about Krishna? If we have the desire, Krishna will give us the ability to do it. Then we will remember Krishna and our devotion will increase."
(Bhaktyaloka, Moscow)