Time is heavy sometimes; imagine how heavy eternity must be.

Life is always travelling to a sorrow.

A life that is burdened with expectations is a heavy life. Its fruit is sorrow and disappointment.

A home filled with nothing but yourself. It's heavy, that lightness. It's crushing, that emptiness.

There is one thing alone that stands the brunt of life throughout its course; a quiet conscience.

The only journey is the one within.

It is a sad reflection on life that when there is only one thing to do it is always extremely unpleasant.

The heaviest burden: “What, if some day or night, a demon were to steal after you into your loneliest loneliness and say to you: ‘This life, as you now live it and have lived it, you will have to live once more and innumerable times more; and there will be nothing new in it, but every pain and every joy and every thought and sigh and everything unutterably small or great in your life must return to you, all in the same succession and sequence — even this spider and this moonlight between the trees and even this moment and I myself. The eternal hourglass of existence is turned over again and again—and you with it, speck of dust!’ Would you not throw yourself down and gnash your teeth and curse the demon who spoke thus? Or have you once experienced a tremendous moment when you would have answered him: ‘You are a god, and never have I heard anything more divine!’ If this thought were to gain possession of you, it would change you as you are, or perhaps crush you. The question in each and every thing, “do you want this once more and innumerable times more?” would lie upon your actions as the greatest weight. Or how well disposed would you have to become to yourself and to life to crave nothing more fervently than this ultimate eternal confirmation and seal?.

The heaviest burden: “What, if some day or night, a demon were to steal after you into your loneliest loneliness and say to you: ‘This life, as you now live it and have lived it, you will have to live once more and innumerable times more; and there will be nothing new in it, but every pain and every joy and every thought and sigh… must return to you — all in the same succession and sequence — even this spider and this moonlight between the trees and even this moment and I myself. The eternal hourglass of existence is turned over again and again — and you with it, speck of dust!’ Would you not throw yourself down and gnash your teeth and curse the demon who spoke thus? Or have you once experienced a tremendous moment when you would have answered him: ‘You are a god, and never have I heard anything more divine!’ If this thought were to gain possession of you, it would change you as you are, or perhaps crush you. The question in each and every thing, “do you want this once more and innumerable times more?” would lie upon your actions as the greatest weight. Or how well disposed would you have to become to yourself and to life to crave nothing more fervently than this ultimate eternal confirmation and seal?

This life is a one-way street.

A reminder of what it was to be mortal and so doomed to tread one road only and that one only once...We can never truly know the path we have not walked.

Si cada uno de los instantes de nuestra vida se va a repetir infinitas veces, estamos clavados a la eternidad como Jesucristo a la cruz. La imagen es terrible. En el mundo del eterno retorno descansa sobre cada gesto el peso de una insoportable responsabilidad. Ese es el motivo por el cual Nietzsche llamó a la idea del eterno retorno la carga más pesada. Pero si el eterno retorno es la carga más pesada, entonces nuestras vidas pueden aparecer, sobre ese telón de fondo, en toda su maravillosa levedad.
(...)
La carga más pesada nos destroza, somos derribados por ella, nos aplasta contra la tierra. Pero en la poesía amatoria de todas las épocas la mujer desea cargar con el peso del cuerpo del hombre. La carga más pesada es por lo tanto, a la vez, la imagen de la más intensa plenitud de la vida. Cuanto más pesada sea la carga, más a ras de tierra estará nuestra vida, más real y verdadera será. Por el contrario, la ausencia absoluta de carga hace que el hombre se vuelva más ligero que el aire, vuele hacia lo alto, se distancie de la tierra, de su ser terreno, que sea real sólo a medias y sus movimientos sean tan libres como insignificantes.

Cry about one thing in life, cry about all; one thread runs through the whole piece.

Truly, life is hell and death's rough hand our only deliverance.