If you desire to be pure, have firm faith, and slowly go on with your devotional practices without wasting your energy in useless scriptural discussions and arguments. Your little brain will otherwise be muddled.
More Ramakrishna quotes :
To work without attachment is to work without the expectation of reward or fear of any punishment in this world or the next. Work so done is a means to the end, and God is the end.Ramakrishna
Bondage is of the mind freedom too is of the mind. If you say 'I am a free soul. I am a son of God who can bind me' free you shall be.Ramakrishna