The secret of a good old age is simply an honorable pact with solitude.[El secreto de una buena vejez no es otra cosa que un pacto honrado con la soledad.]
Inside every old person is a young person wondering what happened.
All sorts of allowances are made for the illusions of youth, and none, or almost none for the disenchantment of age.
A man knows when he is growing old because he begins to look like his father.[Un hombre sabe cuando empieza a envejecer porque empieza a parecerse a su padre.]