Feeling compelled to speak up for something new and vital he found in the air of the nation, Whitman turned to the manual work of（）around 1851 or 1852, as an experiment to familiarize himself with the reality and essence of the life of the nation.
Feeling compelled to speak up for something new and vital he found in the air of the nation, Whitman turned to the manual work of（）around 1851 or 1852, as an experiment to familiarize himself with the reality and essence of the life of the nation.
