Authentic

Maslow called Self-Actualizers: “spontaneous, simple, and natural”.   They are sincere with their emotions and how they display them.

"Their behavior is marked by simplicity and naturalness and by lack of artificiality or straining for effect. This does not necessarily mean consistently unconventional behavior. His unconventionality is not superficial but essential or internal. It is his impulses, thought, consciousness that are so unusually unconventional, spontaneous, and natural. Apparently recognizing that the world of people in which he lives could not understand or accept this, and since he has no wish to hurt them or to fight with them over every triviality, he will go through the ceremonies and rituals of convention with a good-humored shrug and with the best possible grace." - Maslow

Self-Actualizers are authentic, no pretense exists in them.  They are sensitive to people’s feelings and to avoid hurting anyone will adhere to social norms and in this way they are selfless and kind to others.  However, these circumstances are the exception, because their path is motivated by their need to continually expand.