tatement and thought. A man really living alone (alone
mentally as well as physically) would have little or no occasion to
reflect upon his past experience to extract its net meaning. The
inequality of achievement between the mature and the immature not only
necessitates teaching the young, but the necessity of this teaching
gives an immense stimulus to reducing experience to that order and form
which will render it most easily communicable and hence most usable.

2. Behavior and Conduct[87]

The word "behavior" is commonly used in an interesting variety of ways.
We speak of the behavior of ships at sea, of soldiers in battle, and of
little boys in Sunday school.

"The geologist," as Lloyd Morgan remarks, "tells us that a glacier
behaves in many respects like a river, and discusses how the crust of
the earth behaves under the stresses to which it is subjected.
Weatherwise people comment on the behavior of the mercury in the
barometer as a storm approaches. When Mary, the nurse maid, returns with
the little Miss Smiths from Master Brown's birthday party, she is
narrowly questioned as to their behavior."

In short, the word is familiar both to science and to common sense, and
is applied with equal propriety to the actions of physical objects and
to the manners of men. The abstract sciences, quite as much as the
concrete and descriptive, are equally concerned with behavior. "The
chemist and the physicist often speak of the behavior of the atoms and
the molecules, or of that of gas under changing conditions of
temperature and pressure." The fact is that every science is everywhere
seeking to describe and explain the movements, changes, and reactions,
that is to say the behavior, of some portion of the world about us.
Indeed, wherever we consciously set ourselves to observe and reflect
upon the changes going on about us, it is always behavior that we are
interested in. Science is simply a little more persistent in its
curiosity and a little nicer and more exact in its observation than
common sense. And this disposition to observe, to take a disinterested
view of things, is, by the way, one of the characteristics of human
nature which distinguishes it from the nature of all other animals.

Since every science has to do with some form of behavior, the first
question that arises is this: What do we mean by behavior in human
beings as distinguished from that in other animals? What is there
distinctive about the actions of