Over 150 years ago when the Union-Pacific railroad was under construction, an elaborate trestle bridge was built over a certain large canyon in the West as part of the plan to connect St. Louis and California. Before it was open for commercial use, the construction engineer wanted to test its strength. He loaded a train with extra cars and equipment to double its normal payload. The train was driven out to the middle of the bridge, where it was to remain for an entire day. One worker complained, “Are you trying to break this bridge?” “No,” said the engineer. “I’m trying to prove that the bridge is unbreakable.”

So, too, does temptation prove our strength under pressure.