The Father, His Sons, and The Bundle of Sticks, Aesop
An old man summoned his sons around him to give them some fatherly advice. He ordered them to bring in a bundle of sticks, and said to his eldest son: “Break it.”
The son strained and strained, but with all his efforts was unable to break the bundle. The other sons also tried, but none succeeded.
“Untie the bundle,” said the father, “and each of you take a stick.” When they had done so, he told them: “Now, break,” and each stick was easily broken.