Getting satisfaction at the New York Public Library was a whole lot easier last night when legendary rock god Keith Richards dropped into the main branch on Fifth Avenue to talk about his just-released autobiography, “Life.”

As if he needed street cred on the literary front, the 66-year-old co-founder of the Rolling Stones in his deep rumble confided to the audience of 500, “I love libraries. They’re places where you want to obey the laws — even the ones about silence.”

Then, as if he felt it necessary that he live up to his rebel image, the legendary guitarist added, “I still owe fines on overdue books from 50 years ago.”

That’s the way it went at this event, which sold out in a record 43 seconds.

Hosted by music commentator Anthony DeCurtis, the evening was presented in a conversational format where Richards joked and didn’t smoke as he recalled his life and times.

Slouching in a high-backed bishop’s chair, leather-faced Richards, known for his drinking and drugging over the last 40 years, reminisced with remarkable clarity, although he was evasive when it came to delicate subjects such as Mick Jagger.

In his book, Richards is tough on Jagger, saying Mick has a major case of egomaniac. Last night, Richards was kind.

“Mick and I shared a burning interest in the blues and we were amazed we found each other,” Keith recalled. “In those early days, we were so idealistic.”

When DeCurtis asked the guitarist about his use of drugs, Richards told the crowd “they seep into your life.” A moment later he said, “I need to take a break.”

When Richards returned to the stage within two minutes, DeCurtis immediately returned to the subject.

Despite his discomfort, Richards, who hasn’t been a junkie for 30 years, said “all my news about drugs is out of date.”

There was almost zero acid in anything Richards said.

About the Beatles vs. the Stones rivalry, he revealed: “I never felt the competition, I felt camaraderie.”

“The Beatles,” he explained, “were primarily a vocal group where either Paul or John took the lead. The Stones were more instrumental and we had one frontman, and he was the best.”

Yet while Keith never spoke about wild rumors from the ‘80s, like his heading to Switzerland to get total transfusions from the blood of teenagers or more recently that he snorted the ashes of his cremated father, he did say the one thing that most of the fans in the room wanted to hear.

When asked about the possibility of a new Rolling Stones record and supporting tour, Richards was quick to reply, “I’ll do my best to chat the guys into it, I think there’ll be something next year.”