`` It 's a real declaration of conscience , about principles , about what he believes in , '' said CNN Senior Political Analyst David Gergen . President Obama 's inaugural address eschews criticism for rhetorical power . The president 's speech invokes the themes of his re - election campaign . His progressive address mentions climate change , gay marriage . David Gergen : Obama said ` ` let 's talk about what 's essential ''
President Obama 's inaugural address eschews criticism for rhetorical power . The president 's speech invokes the themes of his re - election campaign . His progressive address mentions climate change , gay marriage . David Gergen : Obama said ` ` let 's talk about what 's essential ''