“Who knows what I want to do? Who knows what anyone wants to do? How can you be sure about something like that? Isn't it all a question of brain chemistry, signals going back and forth, electrical energy in the cortex? How do you know whether something is really what you want to do or just some kind of nerve impulse in the brain? Some minor little activity takes place somewhere in this unimportant place in one of the brain hemispheres and suddenly I want to go to Montana or I don't want to go to Montana. How do I know I really want to go and it isn't just some neurons firing or something? Maybe it's just an accidental flash in the medulla and suddenly there I am in Montana and I find out I really didn't want to go there in the first place. I can't control what happens in my brain, so how can I be sure what I want to do ten seconds from now, much less Montana next summer? It's all this activity in the brain and you don't know what's you as a person and what's some neuron that just happens to fire or just happens to misfire.”

White Noise (1984)

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Do you have more details about the quote "Who knows what I want to do? Who knows what anyone wants to do? How can you be sure about something like that? Isn't it…" by Don DeLillo?

Don DeLillo101

American novelist, playwright and essayist 1936

Richard Paul Evans (1962) American writer

Source: The Sunflower

“Some people say, "How can you live without knowing?" I do not know what they mean. I always live without knowing. That is easy. How you get to know is what I want to know.”

Richard Feynman book The Meaning of It All

lecture I: "The Uncertainty of Science"
The Meaning of It All (1999)

“You know what's hard? I want to give back. I want to do all the things that will make me feel fulfilled. But whenever I do those things, people think it's a press stunt or something. Because they do find me, and there's really no way of hiding from that. And the second that you complain about it, they say, "Well, this is what you wanted, so this is what you're going to get." That's all people see it as now. It's not, "No, I just want to have some time for myself." There are things I want to do, and people don't understand that. You know, my car accident that I got into, where I got my first charge, I wouldn't have been speeding up like I was if I didn't have people shoving cameras in my windows.”

Lindsay Lohan (1986) American actress and pop singer

Interview interview (2009)

“I want to do something splendid before I go into my castle, something heroic or wonderful that won't be forgotten after I'm dead. I don't know what, but I'm on the watch for it, and mean to astonish you all some day.”

Louisa May Alcott book Little Women

Variant: I want to do something splendid... something heroic or wonderful that won't be forgotten after I'm dead. I don't know what, but I'm on the watch for it and mean to astonish you all someday.
Source: Little Women