A devotee who can call on God while living a householder's life is a hero indeed. God thinks: 'He is blessed indeed who prays to me in the midst of his worldly duties. He is trying to find me, overcoming a great obstacle -- pushing away, as it were, a huge block of stone weighing a ton. Such a man is a real hero.
If you first fortify yourself with the true knowledge of the Universal Self, and then live in the midst of wealth and worldliness, surely they will in no way affect you.
As a toy fruit or a toy elephant reminds one of the real fruit and the living animal, so do the images that are worshipped remind one of the God who is formless and eternal.
You speak of doing good to the world. Is the world such a small thing? And who are you, pray, to do good to the world? First realise God, see Him by means of spiritual discipline. If He imparts power you can do good to others; otherwise not.
A truly religious man should think that other religions also have many paths leading to the truth.
One should always maintain an attitude of respect towards other religions. Dispute not, as you rest firmly on your own faith and opinion, allow others also equal liberty to stand by their own faith and opinion.
The waves belong to the Ganges, not the Ganges to the waves. A man cannot realize God unless he gets rid of all such egotistic ideas as "I am such an important man" or "I am so and so". Level the mound of "I" to the ground by dissolving it with tears of devotion.