NJHD 114, 121 - it takes both

NJHD 114, 121
An idea concerning the good which is of charity,
and concerning the truth which is of faith,
may be formed from the light and heat of the sun.
When the light which proceeds from the sun is conjoined to heat,
as is the case in the time of spring and summer,
then all things of the earth germinate and flourish;
but when there is no heat in the light,
as in the time of winter,
then all things of the earth become torpid and die;
also spiritual light is the truth of faith,
and spiritual heat is love.
From these things an idea may be formed
concerning the person of the church,
what his quality is when faith with him is conjoined to charity,
namely, that he is like a garden and paradise;
and what his quality is
when faith with him is not conjoined to charity,
that he is like a desert and earth covered with snow.

The Lord inseminates and implants truth 
in the good of charity
when He regenerates a person.
--- (AC 2063, 2189, 3310)

There is not salvation by faith,
but by a life according to the truths of faith,
which life is charity.
--- (AC 379, 389, 2228, 4663, 4721)