Rabbi Dr. Abraham Twerski, a renowned psychologist, author and Torah scholar, passed away yesterday in Israel at the age of 90.

Twerski, proudly identified as Chassidicwas strongly involved with the Chabad-Lubavitch community.

A Wisconsin native, he spent much of his professional life in Pittsburgh, where the scholar sought to break down stigmas about abuse, addiction and mental-health issues, especially within insular segments of the Orthodox Jewish community.

“I mourn the sad passing of Rabbi Dr. Abraham Twerski, who was a source of much inspiration to me and many thousands of others,” said Chief Rabbi of Britain Ephraim Mirvis. “Acclaimed across the Jewish world, Rabbi Twerski blended Chassidic wisdom and academic expertise with warm humanity.”

He was also a much sought-after Jewish educator.

The rabbi is survived by his second wife, Gail Bessler; four children; as well as grandchildren and great-grandchildren.