Analysis of information sources in references of the Wikipedia article "Secondary source" in English language version.
[T]he same document can be a primary or a secondary source depending on the particular analysis the historian is doing,
[T]he distinction is not a sharp one. Since a source is only a source in a specific historical context, the same source object can be both a primary or secondary source according to what it is used for.
The purpose of a secondary source is to make the primary sources accessible to you. If you can read and understand the primary sources without reading this book, more power to you. If you read this book without reading the primary sources you are like a man who carries a sack lunch to a banquet
[T]he same document can be a primary or a secondary source depending on the particular analysis the historian is doing,
[T]he term 'primary' inevitably carries a relative meaning insofar as it defines those pieces of information that stand in closest relationship to an event or process in the present state of our knowledge. Indeed, in most instances, the very nature of a primary source tells us that it is actually derivative.…[H]istorians have no choice but to regard certain of the available sources as 'primary' since they are as near to truly original sources as they can now secure.
[T]he term 'primary' inevitably carries a relative meaning insofar as it defines those pieces of information that stand in closest relationship to an event or process in the present state of our knowledge. Indeed, in most instances, the very nature of a primary source tells us that it is actually derivative.…[H]istorians have no choice but to regard certain of the available sources as 'primary' since they are as near to truly original sources as they can now secure.
[T]he term 'primary' inevitably carries a relative meaning insofar as it defines those pieces of information that stand in closest relationship to an event or process in the present state of our knowledge. Indeed, in most instances, the very nature of a primary source tells us that it is actually derivative.…[H]istorians have no choice but to regard certain of the available sources as 'primary' since they are as near to truly original sources as they can now secure.
[A] source may be primary or secondary, depending on what the researcher is looking for.
[A] source may be primary or secondary, depending on what the researcher is looking for.