As food is to the body, so is learning to the mind. Our bodiesgrow and muscles develop with the input of adequate nutritious 1food. Otherwise, we should keep learning day by day to maintain 2our keen mental power and expand our intelligent capacity. 3Constant learning supplies us inexhaustible fuel for driving us to 4sharpen our power of reasoning, analysis, and judgment. Learningincessantly is the surest way to keep pace with the time in the 5information age, and an infallible warrant of success in times of uncertainty. Once learning stops, vegetation sets in. It is a common fallacy to regard school as the only workshop for the acquisition ofknowledge. On contrary, learning should be a never-ending 6process, from the cradle to the grave. With the world ever changed 7so fast, the cease from learning for just a few days will make a person lag behind. What's worse, the animalistic instinct deep inour subconsciousness will come to life, and weakening our will to 8pursue our noble ideal, sapping our determination to sweep away obstacles to our success, even killing our desire for the refinementof our characteristic. Lack of learning will inevitably lead to the 9stagnation of the mind, or even worse, its fossilization, Therefore,to stay mentally younger, we have to take learning as a lifelong 10career.