Barbara Lust, professor of linguistics and human development, stated: “Children as young as 3 years of age already possess a remarkable knowledge of language structure and syntax which is so complex and precise that it must challenge any known learning theory to account for its acquisition. ”
كتب الپروفسور في علم اللغة نُوام تشومسكي :‏ « عندما ندرس لغة البشر ،‏ نقترب مما يدعوه البعض ‹ جوهر الانسان › ،‏ صفات العقل المميزة التي على حد علمنا ينفرد بها الانسان » .‏