Christopher Hitchens

It's not at all good when your cancer is 'palpable' from the outside. Especially when, as at this stage, they didn't even know where the primary source was. Carcinoma works cunningly from the inside out. Detection and treatment often work more slowly and gropingly, from the outside in.

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.