"The sections that are dwindling include the whole middle-class and the skilled artisans. The sections that are increasing are the very poor, the shiftless and drunken, the feeble-minded—feeble-minded …"

"I am not a fan of the human race."

"The greatest happiness of the greatest number is no more than a formula for avoiding the difficult problem of how to make people happy."

"There are three ways of securing a society that shall be stable as regards population. The first is that of birth control, the second that of infanticide or really destructive wars, and the third that…"

"The world needs more logic and less emotion."