There is much else to occupy one's mind. Besides, there are certain toys which give no exercise to the mind and no inspiration to the child, and that makes it lazy. Anything constructive is good. For instance, a train that runs, or an instrument that sounds, that is good for a child, or anything that it can construct with, as the pieces of a puzzle that a child can make a picture from, or the little bricks and pillars and different things from which it can make a house or something else; all such toys are good. In short every toy must be constructive, must lead to some purpose; that should be the guiding principle.