Quote from : Faery Tale: One Woman's Search for Enchantment in a Modern World Book

In prehistoric times, early man was bowled over by natural events: rain, thunder, lightning, the violent shaking and moving of the ground, mountains spewing deathly hot lava, the glow of the moon, the burning heat of the sun, the twinkling of the stars. Our human brain searched for an answer, and the conclusion was that it all must be caused by something greater than ourselves - this, of course, sprouted the earliest seeds of religion. This theory is certainly reflected in faery lore. In the beautiful sloping hills of Connemara in Ireland, for example, faeries were believed to have been just as beautiful, peaceful, and pleasant as the world around them. But in the Scottish Highlands, with their dark, brooding mountains and eerie highland lakes, villagers warned of deadly water-kelpies and spirit characters that packed a bit more punch.