42 ;;Quote: all animals recognize objects and predict their behavior; allows representation of artifacts without language

42+;;Quote: language enriches the human representation of artifacts, but is not necessary

57 ;;Quote: with difficulty, animals can discriminate numbers 0 to 10 as well as young children

57+;;Quote: different process of acquistion tells us that animals and children represent number in different ways

58 ;;Quote: animals have a number category and some understanding of a number concept, e.g., ordinality

62 ;;Quote: humans spontaneously assign symbols to objects and events; animals do not

62+;;Quote: humans manipulate symbol sequences to alter their meaning; a combinatoric system not available to animals

62+;;Quote: number and language skills leapfrog each other as children learn to manipulate symbols

94 ;;Quote: all animals process spatial information and use dead reckoning; supplemented with specialized devices

104 ;;Quote: only adult great apes and children over two pass Gallup's dye mark test of self-awareness; spontaneous behavior toward their mirror reflection

113 ;;Quote: all animals recognize others, distinguishing males from females, young from old, and kin from non-kin

113+;;Quote: only humans appear to have a sense of self, to have unique and personal mental states and emotional experiences

129 ;;Quote: human infants infer the intentions and goals of others; for example, opening a jar that an adult failed to open

209 ;;Quote: most animals have rich thoughts and emotions but no system for communicating what they think to others

233 ;;Quote: young children and tamarins expect all falling objects to fall straight down, despite evidence to the contrary

234 ;;Quote: young children and all animals can not shape the moral community; limited capacity for inhibition and conceptual change

234+;;Quote: to make ethical decisions you must choose between alternatives, often inhibiting our desires; furthermore, what is right and wrong changes as our legal systems change