1. mathematics A division in a line such that the proportion of the whole to the larger area is equal to the proportion of the larger area to the smaller one. The mathematical golden mean has been employed in all manner of things, not the least in art, architecture, and even philosophy.

2. A general rule of moderation, avoiding both extreme excess and extreme deficiency. Some people will argue ardently against ever consuming alcohol, but to me, as long as you follow the golden mean, you'll be just fine. There are pros and cons to both approaches, so why don't we aim for a golden mean that incorporates elements of both?