https://www.youtube.com/watch?v=-gXK2VqWJDg

"I thought that it would be great if Intro: Persona and Stay would go in our anthology album Proof. Intro: Persona starts with 'Who am I' so I've been thinking about that a lot while we ran full speed ahead since our debut, and even now."

"I have many different personas: there's Kim Namjoon as a human being, there's Kim Namjoon who is a family member and friend, and then there's RM who makes music. I have all these different me's so sometimes it comes as a heavy burden, and at times I wonder who the 'real me' is. But in the end, I found that all these personas that I've been shifting between are all me, And I think the members and our ARMY who 'Stay'ed by my side no matter which of the me's I was are my proof,"

- Kim Namjoon💜

https://www.youtube.com/watch?v=aQcCBunKElM

"I wanted to include "Moon" and "Jamais Vu" so that you could give them another listen."

"Everyone knows that ARMY and I are inseparable like the Earth and the Moon. And it's already a well-known fact that this is what "moon" is about. Now, I think we're at a point where I am ARMY and ARMY are me, we've assimilated into one. The path I've taken so far wouldn't have been possible without ARMY. You're my, and BTS' living Proof. Just like the lyrics in "Jamais Vu". whenever things get tough and I get exhausted, I will think of our members and ARMY who have been my refuge and comfort and make more good music."

- Kim Seokjin💜

https://www.youtube.com/watch?v=ShkUs1Piyro

"I picked two songs in completely contrasting styles. They're "Trivia 轉 : Seesaw," which is relatively calm, and "BTS Cypher PT.3 : KILLER (Feat. Supreme Boi)," which is more powerful and full of energy. I wonder what sort of songs I can come up with ranging between these polar opposite songs. It's fun and meaningful to come up with ideas, for expanding my musical spectrum. I think that always challenging myself with no limits in the musical spectrum is who I am, and who BTS is. I guess my music, and BTS' music that are the products of these thoughts and ideas are our Proof."

- Min Yoongi💜

https://www.youtube.com/watch?v=Rl8YStTOPT8

'I included Her and Outro: Ego in this album, Proof. Her is essentially a love song, but some ARMY interpreted the lyrics as being more complex, about feeling the pressures of having to reshape who I am for Her. There can be many different interpretations, but there are times when I have to wear a mask to hide the sides of myself that I don't particularly want to show other people. And I sometimes hid because I didn't want to show that side of myself either. But they are all me. I came to accept all of my sides as parts of my identity, my ego, because the members and ARMY accept all of me. Who I am, just as I am, my ego is my Proof,'

- Jung Hoseok💜

https://www.youtube.com/watch?v=L-6JNwFV18Y

"I wanted "Filter" and "Friends" to be included in this album. I wanted to live up to ARMY's expectations and show them many different sides of myself. And I still have many different colors left to share. I might have come across as being colorless instead of colorful if I'd accommodated myself to other people's ideas without having a distinct hue of my own. But my 'Friends' - the members and ARMY - were always there to help me remind myself of what my essence is and keep myself centered. You are my proof,"

- Park Jimin💜

https://www.youtube.com/watch?v=y6D2LOvVht4

"I tended to think of Kim Taehyung, and artist V as being separate, and thought that I had to choose one or the other, as visually portrayed in the "Singularity" music video. That was when I thought hard about who I was as a person, and I felt a bit confused,"

"Artist V performs om stage, and enjoys himself with ARMY, but Kim Taehyung spends ordinary days with family and friends. Now I'm able to accept both sides of myself, but also keep them separate,

"I've lessened the burden of thinking so much, too, just like how the day resets at midnight. But I think all this time I spent pondering is the Proof that, made me into who I am today,''

- Kim Taehyung💜

https://www.youtube.com/watch?v=ZbwBdnWKCr4

"I added 'Euphoria' and 'Dimple' to this album. I like it best when I get to sing with the other members and get to connect with Army, no matter what the songs are. That's what I've been dreaming of. Even now when I sing and dance I'm incredibly happy. When I hear the roar from the audience when I perform, I'm always happy when I'm on stage and I'm glad there are people who become happy seeing me on stage."

"Every single day I am thankful and I enjoy myself. Me happily making music while watching ARMY, and your smiles as you watch me-these are my Proofs,"

- Jeon Jungkook💜