What are all the nouns in the paragraph Most people need eight to ten hours of sleep nightly. [21 Edison, however, was able to sleep much less and still work efficiently. [31 As a young man he began the schedule he continued for his entire life. [41 At night he earned his living. [51 During the day he read and studied. [6] He filled huge notebooks with notes on the books he read and the experiments he made. [7] Four hours of sleep was all he needed. [81 He had great powers of concentration. [9] When he was working on a project, he might go for days with hardly any rest. [10] His definition of genius was "one percent inspiration and ninety-nine percent perspiration. "