<http://webisa.webdatacommons.org/prov/440500197> <http://www.w3.org/ns/prov#wasDerivedFrom> <http://webisa.webdatacommons.org/298769118> . <http://webisa.webdatacommons.org/298769118> <http://www.w3.org/ns/prov#wasQuotedFrom> <metafilter.com> . <http://webisa.webdatacommons.org/298769118> <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://www.w3.org/ns/prov#Entity> . <http://webisa.webdatacommons.org/298769118> <http://www.w3.org/ns/prov#value> "We can talk glowingly about how nowadays we do not need to exercise it, but my observation (which may be subjective, I grant) is that memory is an ability which must be practiced to improve." .