The Travelers and the Plane Tree

Two Travelers, worn out by the heat of the summer's sun, laid themselves down at noon under the wide-spreading branches of a Plane-tree. 

As they rested under its shade, one of the Travelers said to the other: "What a singularly useless tree is the Plane. It bears no fruit, and is not of the least service to man." 

The Plane-tree interrupting him said: "You ungrateful fellows! Do you, while receiving benefits from me, and resting under my shade, dare to describe me as useless, and unprofitable?" 

Moral : Some men despise their best blessings because they come without cost.