Work less. Spend less. Live more.
—chalked on a sidewalk at my college, years ago
I was reading economics at the time, so it made a lot of sense to cast the preference in terms of isoutility curves. As long as the level curves of
(consumption, leisure) space are sufficiently close to parallel the consumption axis, the above suggestion is rational, even optimal.
In terms of partial derivatives,
∂𝓤 / ∂leisure > ∂𝓤 / ∂consumption at many points in
(consumption, leisure) space. More to the point, the directional gradient along the budget constraint points leisureward even at the expense of consumption, for a meaningfully large fraction of the segment.