According to a recent study of the brains of identical and fraternal twins, differences in the amount of gray matter in the frontal lobes are not only genetically influenced but are significantly correlated with differences in intelligence.

As an experimental psychologist, I have been trained not to believe anything unless it can be demonstrated in the laboratory on rats or sophomores.

The problem with the religious solution [to philosophical problems] was stated by Mencken when he wrote, 'Theology is the effort to explain the unknowable in t…

'The most common of all follies,' wrote H. L. Mencken, 'is to believe passionately in the palpably not true. It is the chief occupation of mankind.' In culture…