A growing number of people are beginning to realize that wealth is not the sole prerequisite for happiness .
In spite of the extraordinary progress made in science and technology ， problems remain in terms of guaranteeing that achievements benefit the greatest number of people .
A famous thinker once wrote that "the greatest threat to mankind is mankind itself ! "If this is indeed the case ， then the current situation should make us ponder our futuer existence .
U.S. President Harry Truman once remarked ： "The buck stops here ! "His view has been confirmed by numerous world leaders who have assumed full responsibility for their actions .
Large families were once seen as a blessing . Today ， however ， things are changing and an increasing number of Chinese parents realize that fewer is better .
People used to place total reliance on the government . The so-called "iron rice bowl "prevailed in the past ， but things are quite different today .
Several years ago ， Chinese streets were filled with people wearing identical drab clothing . Today ， however ， things are quite different and the streets are awash with people wearing fashionable bright colored outfits . Why has the change taken place ?
Years of observing human behavior has enabled me to conclude that the major difference between mediocrity and success lies solely with the individual concerned . Successful individuals consistently seek advancement ， while their less industrious contemporaries are merely content with the status quo .
Traditional way of thinking have changed dramatically . The pendulum has swung and people are exhibiting greater open-mindedness and a burning desire to detemine their own destiny .