Hmm, perhaps 'pare it down' is a poor way to phrase it. Let me expand on it a touch!
Some of the dialogue was very complicated and philosophical. I'm not saying that is a bad thing - but having a full text box ( a 'wall of text' ) can cause the player to feel overwhelmed, especially with themes so complex. I would recommend breaking up the statements and perhaps have only a line or two shown per click if possible.
Also to aid in this, I think you could also add in short descriptions of what the characters are doing as they are talking, For example:
- [He laughs derisively, uninterested in your statement]
- [She looks around in wonder seeming lost, but intrigued]
- [They begin skipping stones thoughtfully, then turn towards you to speak]
I think this would break up the dialogue a tad, plus have an added bonus of bringing the player more fully into the world you've created. As for choices, I think one way to have simple ones would be to choose where your character is going. Example:
- [In front of you there is a multicolored babbling stream. What would you like to do?]
- Cross steam
- Follow alongside the stream
That said, I think your idea of having the character choice be to think positively or negatively was brilliant and would love to see it expanded further. Maybe you could have multiple points where after they've had a character encounter and the player character could be asked how they are feeling? For example:
- [Think positively, I feel more fully myself. The world thrums at my fingertips]
- [Think negatively, I'm beginning to feel unwound. The world begins to blur slightly as I get lost in my thoughts]
So that would help move the story along, help the player feel like they're fully impacting the story, and also be a depiction of Alice in Wonderland's key factor of descending further into the rabbit hole or trying to find your way back out.
Anyway, sorry for the huge post (I am not immune to creating a Wall of Text LOL) I guess you caught me on a brainstorm day haha. I hope this helps explain the thoughts I had - feel free to ask more questions if needed. Hope your day is going well and you keep up the good work! C: