The increase in brain size and refinement of stone artifacts point to an unbroken advance in mental ability over the last two or three million years.... No organ in the history of life has grown faster.


On Human Nature (1978) - Ch.4 Emergence


The increase in brain size and refinement of stone artifacts point to an unbroken advance in mental ability over the last two or three million...

The increase in brain size and refinement of stone artifacts point to an unbroken advance in mental ability over the last two or three million...

The increase in brain size and refinement of stone artifacts point to an unbroken advance in mental ability over the last two or three million...

The increase in brain size and refinement of stone artifacts point to an unbroken advance in mental ability over the last two or three million...