1. We have each of us, an essential biologically based inner nature, which is to some degree "natural", intrinsic, given, and, in a certain limited sense, unchanging.

2. Each person's inner nature is in part unique to himself and in part common to everyone else.

3. It is possible to study this inner nature scientifically and to discover what it is like - (not invent - discover).

4. This inner nature, as much as we know of it so far, seems not to be intrinsically or primarily or necessarily evil. The basic needs (for life, safety and security, for a sense of belonging and affection, for respect and self-respect, and for self-realization, perhaps more adequately expressed as self-actualization), the basic human emotions and the basic human capacities are on their face either neutral, premoral or positively "good". Destructive-ness, sadism, cruelty, malice, etc., seem so far to be not intrinsic but rather they seem to be violent reactions against frustration of our intrinsic needs, emotions and capacities.

5. Since this inner nature is good or neutral rather than bad, it is best to bring it out and to encourage it rather than to suppress it. If it is permitted to guide our life, we grow healthy, fruitful, and happy.

6. If this essential core of the person is denied or suppressed, he gets sick sometimes in obvious ways, sometimes in subtle ways, sometimes immediately, sometimes later.

7. This inner nature is not strong and overpowering and unmistakable like the instincts of animals. It is weak and delicate and subtle and easily overcome by habit, cultural pressure, and wrong attitudes toward it.

8. Even though weak, it rarely disappears in the normal person - perhaps not even in the sick person. Even though denied, it persists underground forever pressing for realization.