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Historian [[Arthur M. Schlesinger, Jr.]] has said the spectrum theory was "adequate to the political simplicities of the nineteenth century, when the Right meant those who wished to preserve the existing order and the Left meant those who wished to change it. But the twentieth century, here as elsewhere, introduced new ambiguities." <ref>[http://www.writing.upenn.edu/~afilreis/50s/schlesinger-notrightleft.html Not Right, Not Left, But a Vital Center], [[Arthur M. Schlesinger, Jr.]], ''New York Times Magazine'', April 4, 1948.</ref>

Historian [[Arthur M. Schlesinger, Jr.]] has said the spectrum theory was "adequate to the political simplicities of the nineteenth century, when the Right meant those who wished to preserve the existing order and the Left meant those who wished to change it. But the twentieth century, here as elsewhere, introduced new ambiguities." <ref>[http://www.writing.upenn.edu/~afilreis/50s/schlesinger-notrightleft.html Not Right, Not Left, But a Vital Center], [[Arthur M. Schlesinger, Jr.]], ''New York Times Magazine'', April 4, 1948.</ref>

In modern times, the left emphasizes collective wisdom as a guiding force (see [[planned economy]]), while the right emphasizes individual rights.  

In modern times, the left emphasizes [[collectivism|collective]] wisdom as a guiding force (see [[planned economy]]), while the right emphasizes individual rights.  

==Definitions==

==Definitions==