of the Fibonacci numbers and the song "Jambi" uses and makes a reference to the common metrical foot iamb. The lyrics on Ænima and Lateralus focus on philosophy and spirituality—specific subjects range from organized religion in "Opiate", to evolution and Jungian psychology in "Forty-Six & 2" and transcendence in "Lateralus". On 10,000 Days, Keenan wanted to explore issues more personal to him: the album name and title track refer to the twenty-seven years during which his mother suffered from complications of a stroke until her death in 2003. Influences In 1997, Tool named King Crimson, Melvins, and Peter Gabriel's Passion as common influences on its development. In describing their wide range of styles, critics have noted that they are "influenced as much by Pink Floyd as by the Sex Pistols." In a 1993 interview, Adam Jones mentioned Joni Mitchell, King Crimson, Depeche Mode, and country music as being among their inspirations. In 1997, Maynard James Keenan named Hejira by Joni Mitchell, Holy Money/Greed by Swans, Physical Graffiti by Led Zeppelin, Red by King Crimson, and Passion by Peter Gabriel as his five favorite records. Danny Carey cited Bill Bruford and Alan White of Yes as his two biggest rock influences, in addition to Bruford's adventurousness in electronic drums. In the same way, Jones stated that Robert Fripp's performances with King Crimson caused him to "wake up" to music as a teen. Furthermore, he acknowledged the other King Crimson guitarists, Adrian Belew and Trey Gunn, along with Buzz Osborne from the Melvins, as his biggest influences. Tool have constantly expressed the massive impact that progressive rock pioneers King Crimson have had on their music; on a 2001 tour with them, Keenan joked: "Now you know who we ripped off. Just don't tell anyone, especially the members of King Crimson." Carey said that listening to the Discipline album upon its 1981 release "revolutionized" his musical perspective in terms of polyrhythms and the balance between the instruments. In 1997, Keenan explained how the composition process of Tool reflected that of King Crimson: "They're very much into listening to each other; even though they might have a basic structure that they're following, it's about fitting themselves in with each other." Contrary to these statements, longtime King Crimson member Robert Fripp has downplayed any influence his band had on Tool. In an interview, Fripp touched on how the two bands relate to each other, stating