Paul Hoffman said this quote

How can I know for sure if it's my son speaking and not you?You never can, my lord. Just as no man can ever be sure that he alone is a thinking and feeling creature and everyone else a machine that only pretends to feel and think.

~ Paul Hoffman

People treat the present moment as if it is just a stopping point on the way to some great goal that will happen in the future, and then they are surprised that the long day closes; they look back on their life and see that the things they let go by so unregarded, the small pleasures they dismissed so easily were in fact the true significance of their lives- all the time these things were the great and wonderful successes and purpose of their existence.

~ Paul Hoffman