It is desirable that a man […] live in all respects so compactly and preparedly that, if an enemy take the town, he can, like the old philosopher, walk out the gate empty-handed without anxiety.

— Henry Thoreau, Walden

My answer is yes. A couple of years ago my wife and I moved countries. I was able to almost just leave with nothing but a small backpack1. I sold or donated all my possessions accumulated during my bachelor years and just leave with what then I considered my essential things: 42 things. They all fit on[sic] a 65 liter2 backpack.

— mnmal{.tumblr_blog}, Quoting the above passage from Walden

1 I agree with the sentiment. Further:

6· Get rid of all the stuff that doesn’t fit in a suitcase

7· Get rid of all the stuff that doesn’t fit in a backpack

8· Get rid of the backpack

— Mark Pilgrim, The Pursuit of Happiness

2 You don’t often see the word ‘liter’. We had a discussion about color vs. colour vs. (my own nelogism) colr at work, but litres as such a European thing that you forget they have an American spelling too.