A exceptionally nice guy, a pillar to those around him, helpful and kind. Though he is mostly happy and smiling he can get angry, however this does not happen very often.

Fortunate are you, if you have a renison in your life!

Briefly, "the realization that each random passerby is living a life as vivid and complex as your own." Originally from the Dictionary of Obscure Sorrows, which has a lot more beautiful neologism definitions like this you might enjoy.