Play is the work of childhood.
True interest appears when the self identifies itself with ideas or objects, when it finds in them a means of expression and they become a necessary form of fuel for its activity.
How much more precious is a little humanity than all the rules in the world.
Equilibrium is the profoundest tendency of all human activity.
Punishment renders autonomy of conscience impossible.
The principle goal of education in the schools should be creating men and women who are capable of doing new things, not simply repeating what other generations have done.