When I came to the West I realized there was much hunger for spiritual teachings but no environment for spirituality.
God created the visible world so that through its visible objects men could understand his spiritual teachings and the marvels of his wisdom
Great spiritual teachings do not change but we do. As we grow older and wiser we can receive the teachings at deeper levels.
Some people awaken spiritually without ever coming into contact with any meditation technique or any spiritual teaching. They may awaken simply because they can't stand the suffering anymore.