Without preaching, without understanding philosophy, you cannot keep your strength. Everyone should be thoroughly well conversed with the philosophy which we are putting… That means you must read thoroughly every day. So many books we have got. And Bhagavata is so perfect that any verse you read, you get a new enlightenment. It is so nice. Either Bhagavad-gita or Bhagavata. But it is not ordinary writing. It is not the opinion. We are placing as it is, without opinion.

So preaching is always difficult. That I have repeatedly saying. You cannot take preaching very easy-going. Preaching must be fight. Do you mean to say fighting is easy thing? Fighting is not easy thing. Whenever there is fight, there is danger, there is responsibility. So preaching means… What is the preaching? Because people are ignorant, we have to enlighten them. That is preaching.

From Srila Prabhupada's Morning Walk — December 12, 1973, Los Angeles