produce a will that is good in itself; and a will is good only if it
is motivated by duty. Good will, as has been said, is for Kant
the only thing that is good without qualification. It is not what
it achieves that constitutes the goodness of a good will; good
will is good in itself alone.
Even if, by some special disfavour of destiny, or by the niggardly
endowment of stepmotherly nature, this will is
entirely lacking in power to carry out its intentions, if by its
utmost effort it still accomplishes nothing, and only good will
is left… even then it would still shine like a jewel for its own
sake as something which has its full value in itself (Kant, 1991,
394).
Good will is the highest good and the condition of all other
goods, and good will is within our power, while happiness is
not. Happiness is an impossible goal to pursue, because no
finite being, however powerful and insightful, can say definitely
and consistently what he really wants. Riches may bring
with them anxiety, long life may turn out to be nothing but
long misery. Only an omniscient being could determine with
certainty what would make him truly happy.