Wikiphilosophers/Foundationalism/S. Perquin

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The only thing I know is that my human mind exists because I know that I think. This essentially corresponds to René Descartes' cogito, ergo sum ("I think, therefore I am"). From that perspective, I also know for sure that I experience a world through my senses. I see what I see, I hear what I hear, I feel what I feel, I smell what I smell and I taste what I taste. I see this as the only world that I, as a human, can experience and understand. However, I do not know if other people consciously experience the world, because I cannot experience it from someone else's body. It could just as well be that all people are NPCs, like in a video game, and that they only say they can think consciously, but this is actually not the case. Maybe I have imagined everything and everyone in this world in my own mind?

An excess of solipsistic thoughts can make you feel alone in the universe

This solipsistic thought might sound somewhat egocentric, but it is the only conclusion that can be drawn from the idea that the existence of my mind is the only thing I can be certain of. Others will say this is not true, because they will claim that they are also aware of their mind and can think, but since I have no proof that they also experience the world through their mind, as I cannot experience it myself, I can only continue to doubt.

I must mention that the longer you think about it, the lonelier this thought becomes. Since I do not know whether people have a mind or not, I assume that they do, because otherwise, it becomes difficult to live.