Aim of the study:
Childcare can be categorized as a form of compassionate work, and compassion plays a crucial role in fostering positive relationships between teachers and children. This study aimed at understanding the nature of relationships between the Light and Dark Triads and compassion for others within a mediational context of inner harmony among teachers.

Subject or material and methods:
The study was conducted on a group of 261 teachers (87% women and 13% men) working in primary schools (62%), secondary schools (25%), preschools (12%), and universities (1%). Participants completed printed or online questionnaires. The measures consisted of the Light Triad Scale, the Dark Triad Scale, the Compassion Scale for Others, and the Inner Harmony Scale.

Results:
The study confirmed all the four hypotheses. The most significant finding revealed that inner harmony mediated the relationship between all the dimensions of both the Light and Dark Triads with compassion for others. The research also demonstrated direct associations between the dimensions of the Light and Dark Triads with compassion for others and inner harmony.

Discussion:
Higher levels of the Light Triad are related to increased motivation to establish stable and cooperative interpersonal connections. In addition, inner harmony turns out to be a key aspect of happiness, while experiencing positive emotions by an individual leads to more satisfying, empathy-based, and compassionate relationships with others.

Conclusions:
The study indicated that compassion for others is a crucial attribute, particularly in the role of a teacher, which justifies the need for further development of research and concepts within this research group.