McCormick sophomore Yehuda Yudkowsky, an active member of Northwestern’s Jewish community, died Monday at St. Francis Hospital in Evanston. He was 19.

Friends and family remembered Yudkowsky as smart, generous and passionate — a doer, not a thinker. The biomedical engineering student was involved in many on-campus activities — from a Jewish band to a politics show on WNUR 89.3 FM — a characteristic that friends say was indicative of his go-getter attitude.

“There are some people who will complain and offer solutions, but Yehuda would complain and implement solutions,” his father, Moshe Yudkowsky, said. “He was always full of ideas and never afraid to express them.”

His father described him as the ultimate organizer, who would rather “do something than sit and watch the world pass by.”

Yudkowsky was born in Evanston Hospital and lived all of his life in West Rogers Park with his family. He attended Fasman Yeshiva High School in Skokie and graduated a year ahead of his class in 2002.

Few people were surprised by his decision to enter college early, said close friend Mitchell Bekritsky. Although Yudkowsky was too modest to ever admit it, he excelled in his school work and was ready to accept the challenges of college, Bekritsky said.

“I remember he took the AP Psych exam without ever taking the class,” said Bekritsky, a Weinberg freshman. “All he did was read the book and he managed to score a five.”

Going to college early fit Yudkowsky’s independent personality.

“In high school I’m fairly certain he wore this weird old leather vest everyday for four years,” Bekritsky said. “He just had a style all of his own.”

After his freshman year at NU, Yudkowsky, an Orthodox Jew, spent a year studying at Yeshiva Sha’alvim — a seminary for Jewish religious studies in Israel, a decision his father says Yehuda took with great pride.

Upon his return, Yudkowsky readjusted quickly to his old routines, his father said. He returned to his role as a representative on NU’s Council of Religions and also was a member of the WildKatz Klezmer Band where he played the hammered dulcimer.

Friends and classmates say his active and cheerful presence in these circles will be missed.

“To think that he did all of this in the little time he had in life,” said Communication junior Raysh Weiss, a Daily cartoonist. “The entire community feels at an extreme loss because he really had a sphere of influence.”

Chabad House Rabbi Dov Hillel Klein told The Daily that police informed him Yudkowsky’s body was identified Thursday. Yudokowsky died of multiple injuries in what medical examiners ruled a suicide.

His funeral was held Friday at Shalom Memorial Park in Arlington Heights, Ill.

Yudkowsky is survived by his father Moshe, his mother Rachel, his brother Eliezer, 25, and his sister Channah, 14.