You can find some examples in the wiki to do something similar: https://wiki.contextgarden.net/Generate_Authorlist_from_Head_Content

Also you can use setups instead of macro definitions, and create spaces with \space, \par, etc: https://wiki.contextgarden.net/Setups

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Los fines no justifican los medios, porque la medida verdadera de nuestro carácter está dada por los medios que estamos dispuestos a utilizar, no por los fines que proclamamos.
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“You develop an instant global consciousness, a people orientation, an intense dissatisfaction with the state of the world, and a compulsion to do something about it. From out there on the moon, international politics look so petty. You want to grab a politician by the scruff of the neck and drag him a quarter of a million miles out and say, ‘Look at that, you son of a bitch.’” — Apollo 14 astronaut Edgar Mitchell