求以下蒙田的名言的英文翻譯，最好是cotton譯本中的原譯文！！！

①the arm of friendship is long enough to the world, from the head to the other end.

②In our lives, like the world of the Concerto, by different factors -- by various tone composition, wonderful and shrill, sharp and spreading, lively and solemn.

③travel in my opinion is a very good exercise, in the heart of the practice of constantly new unknown activities.