G. Stanley Hall

Man is largely a creature of habit, and many of his activities are more or less automatic reflexes from the stimuli of his environment.

Adolescence as the time when an individual 'recapitulates' the savage stage of the race's past.

The man of the future may, and even must, do things impossible in the past and acquire new motor variations not given by heredity.

The basic parts, the start-up molecules, can be supplied in abundance and don't have to be made by some elaborate process. That immediately makes things simpler.

As a young child my attention span was, as I remember it, rather short.

What makes knowledge automatic is what gets you to Carnegie Hall - practice, practice, practice.