At one time in my life I used to look out of my bedroom window and see in the distance that stupendous mountain pile, Kinchengunga, one of the highest peaks in the Himalayas. It looked so close, almost as if a day's walking would bring me to its foot but I knew that it would take at least twelve weeks hard trekking to get an able bodied climber there, and then there would be the terrific climb to its summit - a feat seldom accomplished. So it is with knowledge. That which is worth having is seldom of easy attainment and in itself only constitutes a foundation for more knowledge.