If the different individuals have to live harmoniously in one society, with a common aim there must be a set of rules which we call morality...

Nature seems to show that there is a mutual exchange between the different kinds of life and the general environment, meaning that each kind can find...

Only those who are adapted to their environment can be said to be really normal. Adaptation is the starting point, the ground we stand on.

The roots of every plant seek out, from among the many substances which the soil contains, only those which they need.

The child in the postnatal (or psychological) period of his embryonic life, absorbs from the world about him the distinctive patterns to which the...

It may be said that that we acquire knowledge by using our minds; but the child absorbs knowledge directly into his psychic life.

If we are to walk, we must have ground to walk on; after we have learnt to walk, we may learn to jump, dance, etc., but we will still need the ground...

...at birth all children are alike, and need the same treatment or education during the stage of embryonic growth, of mental incarnation.

A child learns to adjust himself and make acquisitions in his sensitive periods. These are like a beam that lights interiorly or a battery that...

Supposing I said there was a planet without schools or teachers, where study was unknown, and yet the inhabitants - doing nothing but live and walk...