The necessary is already sufficient

'We must cultivate our own garden.'

But in doing so, the extent of our gardens must first be quantified in terms of what is just. A man needs only to maintain a plot of land that would be enough for him to sustain his life. Acquisition of a far more larger land would only degrade his own existence; the land must serve the man and not the other way around. One need not carry more than what his back can support.