|He thinks Big|
- "What if bounce houses were made bigger kids. And what if they just happened to be totally amazing? I stand before you today and I hereby declare that...that, uh, little help, Ferb? (Ferb puts on a fan to make Phineas's speech more dramatic) That nobody has yet done justice to the bounce house concept, and that it is up to us to show the world what a bounce house can truly be. For if not us...then, who? If not now...when? And if not when, then...something else! Gentlemen, I know what we are going to do today! But first answer me this: Where's Perry? (Inspirational music and fan shut down abruptly) No, seriously, where is he? I don't... I haven't seen him."
- ―Phineas' most inspirational speech.
Phineas Flynn is one half of the duo "Phineas and Ferb," along with his stepbrother Ferb. Phineas does most of the talking, Ferb does most of the planning. Together they manage to build one impossible thing after another, examples being a rollercoaster, a time machine, and even a portal to Mars.