“Everything in the world that we perceive is an expression of the mind.”

“You perceive the world with your five senses. When your mind perceives the world, then the world exists before you. But if we are born without any senses, then how could we perceive the world except as a dream in our minds? But then...dreams often seem as real as the world we see now. Look...If I touch you with this hand, I can remember touching you, but I can't ever prove I did. If reality is nothing more than what is in our mind, then what is the difference between this world and a dream?”

“We evoke the world we perceive.”

“For the first time we can perceive something of the real proportion of features and events on the stage of the whole world, and may seek a formula which shall express certain aspects, at any rate, of geographical causation in universal history.”

“It is inconceivable that our mind does not change according to where we might be, and how we perceived in it.”

“One cannot simply perceive everything, to be able to perceive everything would be to tedious”