What children aspire to do are usually more ambitious. For example, when you ask the kids in primary schools what they want to do when they grow up, I am sure many of them will say that they want to be the president or the greatest scientist. With all due respect, I think it is good for children to dream big. It is just that as they grow up, they will realize the cruelty of life. After they hit the wall repeatedly, their goals start to shrink.