"Why do you think the Berlin Wall is no more? Because the people in Germany suddenly responded to the energy which they felt in them to demand freedom and right relationship; right relationship is freedom. They wanted liberty, freedom, an opportunity to express that which they are. Therefore, they pulled down the Berlin Wall and united East and West Germany 30 years before anyone thought it possible."
I understand that it means "unexpectedly", but why "30 years" and "before"?
People thought that the Berlin Wall would last 30 years more than it did, that conditions would not exist for it to be pulled down. I have no idea where this figure of 30 years comes from.