
One friend in a lifetime is much, two are many, three are hardly possible. Friendship needs a certain parallelism of life, a community of thought, a rivalry of aim.
The Education of Henry Adams - Página 252 http://books.google.com.br/books?id=BO7Ye0b7mekC&pg=PA252, de Henry Brooks Adams, Publicado por Forgotten Books ISBN 1606209361, 9781606209363