Knowledge is power. Man can do a lot of thinks with the help of this power. But practical knowledge is more essential to do awork successful whereas partial knowledge is not good for that. It is said of Newton that shortly before his death. He remark that he was like a child gathering pebbles on the sea shore while the vast ocean of truth lay unexplored before him. And this is form the mouth of one of the greatest scientists of all times. But it is just like what a really learned men feel. In fact, the more his knowledge increase, the more does he feel how little this knowledge is in comparison with what remains to be known. It is only a man of poor knowledge that boasts of his learning. The harm that this doesis incalculable. Everybody of us knows thatthe great harm of a quack doctor foes to his patient. His treatment generally result in making the cause worse if not a death. A haIf-trained electrician or mechanical may cause great damage to the machines he handles and may even lose his own life. So it is always true that' A little learning is a dangerous think".