These people are like ... a frog living in a well, who has never seen the outside world. He knows only his well, so he will not believe that there is such a thing as the world. Likewise, people talk so much about the world because they have not known the joy of God.
The rishis of old attained the Knowledge of Brahman. One cannot have this so long as there is the slightest trace of worldliness. How hard the rishis laboured ! Early in the morning they would go away from the hermitage, and would spend the whole day in solitude, meditating on Brahman. At night they would return to the hermitage and eat a little fruit or roots. They kept their mind aloof from the objects of sight, hearing, touch, and other things of a worldly nature. Only thus did they realize Brahman as their own inner conciousness.
More are the names of God and infinite are the forms through which He may be approached. In whatever name and form you worship Him, through them you will realise Him.
So long as the bee is outside the petals of the lily, and has not tasted the sweetness of its honey, it hovers around the flower emitting the buzzing sound; but when it is inside the flower, it noiselessly drinks the nectar. So long as a man quarrels and disputes about doctrines and dogmas, he has not tasted the nectar of true faith; when he has tasted it, he becomes quiet and full of peace.
With sincerity and earnestness one can realize God through all religions. The Vaishnavas will realize God, and so will the Saktas, the Vedantists, and the Brahmos. The Mussalmans and Christians will realize Him too. All will certainly realize God if they are earnest and sincere.
If a white cloth is stained even with a small spot, the stain appears very ugly indeed. So the smallest fault of a holy man becomes painfully prominent.