The 1 is of a rather conformist nature, while the 4 is often interested in what differs from it. But these two types can form a rather complementary relationship if they can manage their compulsion well. The 4 can help the 1 to a little more indulge, have fun, and explore his feelings. While the 1 can help the 4 to be more organized and motivate him to act more to concretize his ideas. The 4 is attracted by the self-control, pragmatism, and helpfulness of 1, as well as his desire to improve the world around him. The 1 is attracted by the creativity of the 4, his dreamy side and his search for authenticity. Both are idealists attracted to each other by their sense of integrity. These two types notice what is lacking in the world around them and can support each other to move forward together towards their ideals.
The 1 might sometimes see the 4 as being egocentric, too sensitive, capricious, erased, too taken by his inner world and not very active. The 4 might sometimes see the 1 as being too critical, judgmental, withdrawn on himself and too conformist. The 4 needs intense emotional exchanges while the 1 tends to contain and control his emotions. The 1 might sometimes have trouble with the need of the 4 to feel "special". The 4 might sometimes feel ashamed, inferior and rejected.