No more would I go along with Plato in exiling the poets, who play on the limbic cortex. Not even they are powerful enough to evoke the whole of man. If we are to survive our own destruction of our world and of ourselves by our advance of culture we had better learn soon to modify our genes to make us more intelligent. It is our last chance, that by increasing our diversity we may be able to make some sort of man that can survive without an ecological niche on this our earth. We may be able to live in gas masks and eat algae and distill the ocean.
I doubt that we have time enough.

We are, I think, nearing the end of a course that left the main line of evolution to overspecialize in brain to its own undoing.
Time will tell.

p. 347 cited in: Roberto Moreno-Díaz, José Mira, Warren Sturgis McCulloch (1996) Brain processes, theories, and models: an international conference in honor of W.S. McCulloch 25 years after his death. p. 9 - Embodiments of Mind, (1965)