Recent genetics research might show Schopenhauer to be right. For example, from New Scientist: "Eric 'Barry' Keverne ... and Azim Surani ... have evidence that in the mouse the mother's genes contribute more to the development of the 'thinking', or 'executive', centres of the brain, while paternal genes have a greater impact on the development of the 'emotional' limbic brain." (by Gail Vines, 03 May 1997, p 34, Where did you get your brains?) (em inglês)
