Vincent speaks about the sky:
Vincent: But, the sight of the stars always makes me dream. Why I say to myself should those spots of light in the ﬁrmament be inaccessible to us? Maybe we can take death to go to a star and to die peacefully of old age would be to go there on foot.
What's the meaning of this last run on sentence?
That's a weird sentence to me, I think it's something like "Maybe we go into the stars when we die, and dying of old age is just getting to the stars slower".