It is impossible to have a thought that does not stem from another thought or your senses (seeing, hearing etc.) To demonstrate: it is impossible to imagine a

It is impossible to have a thought that does not stem from another thought or your senses (seeing, hearing etc.) To demonstrate: it is impossible to imagine a color that is not some combination of colors you've already seen before. Trace any idea to their origin, and you'll realize all ideas are founded upon by what you have already seen, heard etc. New ideas can only come from discovery via the senses, or are thus simply a new combination of old ideas... Your reality is limited by what you can sense and remember. "The limits of my language mean the limits of my world" - Ludwig Wittgenstein