One day, Mulla Nasruddin brought a small container to the milkman and said, “Give me one litre of cow’s milk.” The milkman looked at Mulla’s container and said, “A litre of cow’s milk won’t fit into your container.” “All right, give me one litre of goat’s milk,” said Mulla. When the milkman went away without giving any milk, Mulla turned to his wife and said, “Please bring me some yogurt to eat. It’s delicious and nutritious; it keeps you lean and gives lots of energy.” His wife replied, “We don’t have any yogurt.” “Well, it’s good that we don’t because yogurt tastes bland; it lacks food value, and it makes you fat and sluggish,” Mulla said. “Your statements are in direct contradiction. Which one am I to believe?” asked his wife. Mulla said, “If we had yogurt in our house, then you should have believed my first statement, but since we don’t, you should believe my second one.”