We know that man has the faculty of becoming completely absorbed in a subject however trivial it may be, and that there is no subject so trivial that it will not grow to infinite proportions if one’s entire attention is devoted to it.
 Leo Tolstoy, War and Peace (1869). copy citation

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Author Leo Tolstoy
Source War and Peace
Topic attention subject
Date 1869
Language English
Reference
Note Translated by Louise and Aylmer Maude
Weblink http://www.gutenberg.org/files/2600/2600-h/2600-h.htm

Context

“To adorn herself for others might perhaps have been agreeable—she did not know—but she had no time at all for it. The chief reason for devoting no time either to singing, to dress, or to choosing her words was that she really had no time to spare for these things. We know that man has the faculty of becoming completely absorbed in a subject however trivial it may be, and that there is no subject so trivial that it will not grow to infinite proportions if one’s entire attention is devoted to it. The subject which wholly engrossed Natásha’s attention was her family: that is, her husband whom she had to keep so that he should belong entirely to her and to the home, and the children whom she had to bear, bring into the world, nurse, and bring up.” source