<http://webisa.webdatacommons.org/prov/60958453>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/283242065> .
<http://webisa.webdatacommons.org/283242065>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/283242065>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<libertyfund.org> .
<http://webisa.webdatacommons.org/283242065>	<http://www.w3.org/ns/prov#value>	"The scheme under which a person???s income depends on what he turns out, but under which he is more or less free to look into anything he wishes, will certainly induce some sort of activity." .