One winter day, a man discovered a thick layer of frost on his window. He started painstakingly scraping it off.

“What are you doing?” inquired a curious neighbor.

“Removing the frost from my window,” answered the man, “so I can see outside.”

His friend saw that the labor was tedious and advised him, “Light a fire in your home – the frost will disappear by itself!”

“Put on a coat and you will be warm.
Light a fire and you will warm up others.”