Philanthropist Leon Logothetis speaks to a modest audience at the Unionville High School auditorium, talking about the need to be kind. The slide on te screen shows him on his Kindness One motorcycle with homeless man Tony Homes sitting in the sidecar.

It was a simple message: Be kind. Not perfect, just kind. The message came from Leon Logothetis and the message was addressed to Unionville-Chadds Ford School District students and parents during s special evening at Unionville High School Thursday night. Logothetis is the man behind the Netflix series “The Kindness Diaries,” in which he travels the world “living on ...