Good Tension vs Bad Tension
The sounds that emerge from a cello, guitar or any other string instrument are created by tension. Strings are tied to opposite ends of an instrument's body and tightened to an exact tuning. This tension created between the body and the strings creates a rich and vibrant sound. This is good tension.
A professional instrument is built using the best quality of woods and constructed to exact dimensions. This allows for the instrument to withstand and contain the constant tension in the most optimal of ways.
The same principle applies to a family, business or even a country. A strong and solid base is necessary to not only withstand the extreme tensions of life but also to make music from them.
Photo by David Shatner