"There is not substantial data that AZT stops the transmission of HIV from mother to child. There is too much conflicting data to make concrete policy."

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We have a duty towards music; namely to invent it. ...Invention presupposes imagination but should not be confused with it. For the act of invention implies the necessity of a lucky find and of achieving realization of this find. What we imagine does not necessarily take on concrete form and may remain in a state of virtuality; whereas invention is not conceivable apart from its actually being worked out.

— Igor Stravinsky