( Story told by Swami Vivekananda )
All men, so – called, are not yet really human beings. Every one has to judge of this world through his own mind. The higher understanding is extremely difficult. The concrete is more to most people than the abstract.
As an illustration of this, a story is told of two men in Bombay — one a Hindu and the other a Jain — who were playing chess in the house of a rich merchant of Bombay. The house was near the sea, the game long; the ebb and flow of the tide under the balcony where they sat attracted the attention of the players. One explained it by a legend that the gods in their play threw the water into a great pit and then threw it out again. The other said: No, the gods draw it up to the top of a high mountain to use it, and then when they have done with it, they throw it down again. A young student present began to laugh at them and said, “Do you not know that the attraction of the moon causes the tides?” At this, both men turned on him in a fury and inquired if he thought they were fools. Did he suppose that they believed the moon had any ropes to pull up the tides, or that it could reach so far? They utterly refused to accept any such foolish explanation.
At this juncture the host entered the room and was appealed to by both parties. He was an educated man and of course knew the truth, but seeing plainly the impossibility of making the chess – players understand it, he made a sign to the student and then proceeded to give an explanation of the tides that proved eminently satisfactory to his ignorant hearers. “You must know”, he told them, “that afar off in the middle of the ocean, there is a huge mountain of sponge — you have both seen sponge, and know what I mean. This mountain of sponge absorbs a great deal of the water and then the sea falls; by and by the gods come down and dance on the mountain and their weight squeezes all the water out and the sea rises again. This, gentlemen, is the cause of the tides, and you can easily see for yourselves how reasonable and simple is this explanation.”
The two men who ridiculed the power of the moon to cause the tides, found nothing incredible in a mountain of sponge, danced upon by the gods! The gods were real to them, and they had actually seen sponge; what was more likely than their joint effect upon the sea!
Source : The Complete Works of Swami Vivekananda/Volume 8/Lectures And Discourses/Discourses On Jnana-Yoga