Christopher Hitchens

The advice I've been giving to people all my life - that you may not be interested in the dialectic but the dialectic is interested in you; you can't give up politics, it won't give you up - was the advice I should have been taking myself.

Innate mechanisms endow the visual system with highly specific connections, but visual experience early in life is necessary for their maintenance and full development. Deprivation experiments demonstrate that neural connections can be modulated by environmental influences during a critical period of postnatal development.