" The little child is above all shameless, and during its early years it evinces definite pleasure in displaying its body and especially its sexual organs. A counterpart to this desire which is to be considered as perverse, the curiosity to see other persons' genitals, probably appears first in the later years of childhood when the hindrance of the feeling of shame has already reached a certain development. "

― Sigmund Freud , The Collected Works of Sigmund Freud: The Complete Works PergamonMedia (Highlights of World Literature)