Old Is Gold

The meaning of Old is gold is whatever is old is important as gold. We should not think old is a waste. Even though this proverb is short, it has valuable meaning.
The foundation for all the new things in the present world was laid in the olden days and what we are getting at present is all the updated / improvised ones of the old inventions which form the base of the new ones. So we need to value the old things much as these are the basics of learning new things.
Old songs with their sweet melodies, old sculptures standing tall, old friends etc, are all much more precious than gold. From practical to aesthetic value they are very much valuable just like gold. When a thing becomes old it is more valued.