aacquire knowledge is not limited to any age or time. It can bgain by any person all through the life. It cbe like unlimited wealth which can never dfinish. However, the level of a person's knowledge edevelop with his dedication, patience and continuity. A person fhave some new knowledge through regular observation and experimentation. The progress of human beings largely gdepend on the growth of knowledge in various fields in positive and constructive ways. For example, Newton hdiscover a theory of gravitation and there are many famous scientists who iinvent amazing things jmake life easy on the earth.