Language exists only when it is listened to as well as spoken. The hearer is an indispensable partner.

What nutrition and reproduction are to physiological life, education is to social life.

It requires troublesome work to undertake the alteration of old beliefs.

The development occurs through reciprocal give-and-take, the teacher taking but not being afraid also to give.

The future of religion is connected with the possibility of developing a faith in the possibilities of human experience and human relationships that will create a vital sense of the solidarity of human interests and inspire action to make that sense a reality.

As societies become more complex in structure and resources, the need of formal or intentional teaching and learning increases.

A being connected with other beings cannot perform his own activities without taking the activities of others into account. For they are the indispensable conditions of the realization of his tendencies. When he moves he stirs them and reciprocally.