Symbolic differentiations of left and right are virtually universal cultural classifications among humankind. Left handers live with a biased vocabulary "Adroit" and "Dextrous" are associated with the right hand, but "sinister" and "gauche" with the left. The righteous sit on the right hand of God. In 1909, French sociologist Robert Hertz made the following observation: "To the right hand go honours, flattering designation, prerogatives; it acts, orders, and takes. The left hand, on the contrary, is despised and reduced to the role of a humble auxiliary; by itself it can do nothing; it helps, it supports, it holds".Recently, asymmetrical behaviour has been discovered in many living animal species, and palaeontologists have also found hints of preferentially "handed" behaviour in long extinct animals, such as trilobites -- sea creatures that evolved before animals first colonized the land (and long before the evolution of the hand) who persistently turned toward their favoured sides when attacking prey or evading predators.