Deep thoughts. “I don’t think I’m as revolutionary as Ga­li­leo,” Jaden Smith recently told GQ. “But I don’t think I’m not as revolutionary as Galileo.”

And like the Renaissance scientist, the 17-year-old son of Will Smith and Jada ­Pinkett Smith has a few ideas to champion. “Jaden sees himself as a modern-day prophet and is working on a collection of essays,” a pal says in the new issue of Us Weekly. “They’re new takes on string theory and chaos theory, but more mystical.”

After all, he’s getting an out-of-this-world assist with the tome. Explains the source, “Jaden thinks he has spiritual ties to people in other dimensions and galaxies, and they are helping him write.”

The crystal-healing enthusiast also believes his work could have a widespread impact. Adds the insider, “He hopes to have a spiritual following when he releases these.”

Critics be warned: The After Earth star has said he welcomes the opinions of naysayers. “I feel like it's an honor, actually, for people to think I'm crazy,” he admitted to GQ. “They thought Galileo was crazy, too, you know what I'm saying?"