According to Nehru, the individual human being or race or nation must have a certain depth and certain roots somewhere. They have worth because of their roots in the past. It comprises of experience and wisdom. An individual or a group is useless without them. However, one cannot live in roots alone. The roots need the sun and the free air. Then alone can the roots give us sustenance. No branching out or flowering (blossom) is possible without their combination. Only a stout root can sustain leaves, flowers and branches. In the same manner, past experience and wisdom sustain culture.