Thinking is one thing no one has ever been able to tax. (Charles Kettering, late engineer and inventor)

On tax day in the U.S., a little humor might help. Will Rogers said, “The income tax has made liars out of more Americans than golf.” But Kettering’s comment is more helpful and challenging. No matter what tax bracket we may be in—or even if we don’t have to pay any income tax—we should exercise our tax-free right of freedom to think widely and deeply.

Fix your thoughts on what is true, and honorable, and right, and pure, and lovely, and admirable. Think about things that are excellent and worthy of praise. (Philippians 4:8)