Dass der Begriff des Normalen, besonders in sexuellen Leben, fast willkürlich zu nennen ist, wird jeder zugeben, der seine Vielspältigkeit kennen gel… - Hans Blüher

Translation: The concept of normal, especially in sexual life, is designated in an almost entirely arbitrary manner. Anyone familiar with the diversity of sexual life will concede this fact.

The German Wandervogel Movement as Erotic Phenomenon: A Contribution to the Knowledge of Sexual Inversion (1914)

Translation: Friendship between those of the same sex attains an erotic tone, which comes into consciousness, and which also occasionally increases to the point of desire. Here, for older medicine, was where pathology began, for older jurisprudence, where criminality began, without providing any reason for either.