So the journey is over and I am back again where I started, richer by much experience and poorer by many unexploded certainties. For convictions and certainties are too often the concomitants of ignorance. Those who like to feel they are always right and who attached a high importance to their own opinions should stay at home. When one is traveling, convictions are mislaid as easily as spectacles; but unlike spectacles, they are not easily replaced.