"Perceive to have" is exactly correct. Even though it seems easier to knock over a cup if you want to, there was a complex set of processes occurring both insid

"Perceive to have" is exactly correct. Even though it seems easier to knock over a cup if you want to, there was a complex set of processes occurring both inside and outside your body over a long period of time (forever!) which resulted in you acquiring the desire to knock over the cup in the first place. This process is outside your control. There once was a man that said, though It seems like I know that I know, What I'd like to see Is the 'I' that sees me When I know that I know that I know