Sigmund Freud

Dreams tell us many an unpleasant biological truth about ourselves and only very free minds can thrive on such a diet.

They distinguished between true and valuable dreams, sent to the dreamer to warn him or to foretell the future, and vain, fraudulent, and empty dreams, the object of which was to misguide or lead him to destruction.

Science shows cases in which the sexual characteristics appear blurred and thus the sexual distinction is made difficult, especially on an anatomical basis.

but it was his physical resemblance to woman as well as his feminine psychic qualities, such as shyness, demureness, and the need of instruction and help.

show the somatic and psychic characters of man and desire femininity in their sexual object;

he sexual aims of the inverted are manifold, among which contact with the mucous membrane of the mouth seems to be preferred

The sexual impulse is probably entirely independent of its object and is not originated by the stimuli proceeding from the object.

Thus certain intermediary relations to the sexual object connected with copulation, such as touching and looking, are recognized as preliminary to the

One definite kind of contiguity, consisting of mutual approximation of the mucous membranes of the lips in the form of a kiss, has received among the most civilized nations a sexual value

The employment of the mouth as a sexual organ is considered as a perversion if the lips (tongue) of the one are brought into contact with the genitals of the other, but not when the mucous membrane of the lips of both touch each other