
Vejez
Fuente: Charlas de café.
Fuente: [Ramón y Cajal] (2017), p. https://books.google.es/books?id=Z41HDwAAQBAJ&printsec=frontcover&dq=9786071651174&hl=es&sa=X&ved=0ahUKEwjg1Jz_maDhAhVJ6uAKHUb3DxkQ6AEIKDAA#v=onepage&q=Nada%20me%20inspira%20m%C3%A1s%20veneraci%C3%B3n%20y%20asombro%20que%20un%20anciano%20que%20sabe%20cambiar%20de%20opini%C3%B3n&f=false