James C. Schaap on being a Christian [stone]mason:
... writing is no different from, say, laying cement. If a Christian mason wanted to witness to the Lord's saving grace in all that he did, and if he determined therefore that he would only fashion crosses in cement, eventually the poor guy wouldn't have many customers. If he wanted to be the best mason he could be he'd have to know every last thing there to know about laying concrete and erecting block walls. He'd have to ensure that his driveways would be flat and smooth, that they'd hold their set for decades. He'd have to know the very best mix. In short, he'd be far better off studying masonry than preaching. That's also true for bassoon players, garbage collectors, stand up comedians, and Zamboni drivers.
Schaap, James C. 1998. Our Family Album. Grand Rapids, MI: CRC Publications