In my books the philosophy of Krsna consciousness is explained fully so if there is anything which you do not understand, then you simply have to read again and again. By reading daily the knowledge will be revealed to you and by this process your spiritual life will develop. Krsna consciousness is not a hackneyed thing but it is something which is our natural and original consciousness. Presently our consciousness is clouded just like a mirror becomes covered with dust So the cleansing process is this chanting and hearing and doing some service and trying to please the Spiritual Master. By this process our consciousness becomes clear and we are able to understand everything.

Srila Prabhupada, letter, 22 November, 1974