[Undated]

The tropisms may be communicated. In certain circumstances they are too powerful for the modes of communication available to the personality. This, presumably, may be because the personality is too weak or ill-developed if the traumatic situation arrives prematurely. But when this situation does arise, all the future development of the personality depends on whether an object, the breast, exists into which the tropisms can be projected. If it does not, the result is disaster which ultimately takes the form of loss of contact with reality, apathy, or mania. And in this context I include in mania feelings of depression that must be distinguished from the depression of the neuroses. In extreme cases it is an agitated melancholia, but it need not be extreme; the maniacal quality may be so slight as to be recognizable as an obsessive depression, but its essential quality is aggressiveness and hate.