Ego Defense
As long as an ego structure is used for defense it acts as a
barrier against the experience of the Personal Essence. This point
brings us closer to understanding what might be the factor contributing
to maturity. It has to do with the fact that when ego becomes
more developed and rounded it becomes also less defensive. (The
Pearl Beyond Price, pg 135)

Defense and inadequacy
One of the main ego defenses against the state of inadequacy
is that of grandiosity... One comes to believe, and to behave
as if, one has no such inadequacy. The defense is not only that
one is not inadequate, but that one is the best, strongest, most
able. One feels one can do anything. This defense is a complete
denial of the state of inadequacy through a reaction formation,
which is usually called the grandiose self, or a grandiose belief
about one's omnipotence. (The Pearl Beyond Price, pg 364)

The second defense normally employed against the state of deficiency
is negative merging. The individual avoids the feeling of helplessness
and impotence by becoming embroiled in all kinds of negative states
and interactions; thus he also avoids feeling separate and alone.
The negative merging is a way to feel contact and union with another
-- unconsciously the mother -- and hence supported. (The Pearl
Beyond Price, pg 365)

Another defense against inadequacy, less common than the above
two, but related to them, is the schizoid defense of isolation
and withdrawal. The inadequacy is sometimes experienced as an
incapacity to interact with others, to engage in human object
relations. One feels too inadequate and deficient to make contact.
Then one defends oneself against this deficiency in relating by
abandoning inter-personal relations altogether. (The Pearl Beyond
Price, pg 366)

Our defensive suspiciousness manifests in suspecting the motivations
of those we are in relationship with -- our friends, lovers, spouses,
bosses, co-workers, even teachers. You might suspect the reason
your teacher appears to be there for you, or you might question
whether he or she even has the capacity to be there. Defensive
suspiciousness is based on cynicism, the belief that either there
isn't anything essential in a person, or if there is, it isn't
available to you. This is not healthy skepticism, in which you
don't know something and want to find out what is true. Healthy
skepticism is an openness, not the invalidating, angry, and attacking,
doubtful quality of this form of reactivity. What ultimately needs
to happen is for each of us to develop faith in ourselves, which
means having faith in human nature. When we have that, we can't
help but have faith in all human beings. This does not mean blind
trust. It means that you know for sure that every human being
has an essential nature, even though it might be buried and a
person might the acting out of ignorance or cynicism. It means
that you give the other person a chance, that you allow the possibility
that she can be kind and selfless, even though she doesn't always
act that way. It means that you know that such a quality exists
in her and in you. (Facets of Unity, p 244)

Ego defense and superego attacks
The ego automatically and unconsciously responds to the superego
with repression of parts of the personality, to defend itself
against its painful attacks. An effective way to deal with the
superego is to learn to defend against its attacks in a different
way, without having to use repression and the other unconscious
defense mechanisms of the ego. The method has to be conscious
and intentional in contrast to the habitual automatic ways that
can only foster unconsciousness. Learning how to defend consciously
and intentionally against the superego and its attacks is learning
a whole understanding and a whole inner technology. (Essence,
pg 137)