Happiness and Sorrow.

The purer the perception of sorrow, the more one comprehends it. Acceptance of sorrow, is easier than acceptance of happiness, and one can renounce happiness, more easily, than one can renounce sorrow. It is said, that Lord Vishnu, as an Avatar, of a wild female boar, was so engrossed in his offspring, that he only contemplated the offspring. I believe, he contemplated the offspring in deep sorrow. He found his sorrow, so deep and meaningful, that Lord Shiva, had to destroy the perception of the Avatar, by destroying his manifestation. It is said, that Lord Vishnu, ascended to his abode, expressing laughter, after the perception of the non-existence of that manifestation.