ABSTRACT
IT would indeed be a fortunate child that could choose its own parents: for there is much in heredity. Some would say that heredity is nearly everything. Most of the emphasis in this book seems to lie on the environment. But this is partly because in our present state of knowledge it is chiefly with environment that one can work with some confidence of one’s knowledge of the materials. In the first and last resort, however, all that environment can do is to work with the material provided for it by inheritance, to bring out its possibilities for good, and to limit its potentiality for harm. But no amount of environmental aid can alter by one jot or tittle the hereditarily prescribed limits of development.
