A heavy wagon was being dragged along a country lane by a team of oxen. The axles groaned and creaked terribly, when the oxen turning around thus addressed the wheels, “Hey there, why do you make so much noise? We bear all the labor, and we—not you—ought to cry out!” Those complain first in our churches who have the least to do. The gift of grumbling is largely dispensed among those who have no other talents, or who keep what they have wrapped up in a napkin.

Charles Spurgeon in The Quotable Spurgeon