“Common sense is the most widely shared commodity in the world, for every man is convinced that he is well supplied with it.”

“I suppose therefore that all things I see are illusions; I believe that nothing has ever existed of everything my lying memory tells me. I think I have no senses. I believe that body, shape, extens...”

“Except our own thoughts, there is nothing absolutely in our power.”

“I desire to live in peace and to continue the life I have begun under the motto 'to live well you must live unseen”

“Let whoever can do so deceive me, he will never bring it about that I am nothing, so long as I continue to think I am something.”

“although we very clearly see the sun, we ought not therefore to determine that it is only of the size which our sense of sight presents; and we may very distinctly imagine the head of a lion joined...”

“And, in fine, of false sciences I thought I knew the worth sufficiently to escape being deceived by the professions of an alchemist, the predictions of an astrologer, the impostures of a magician, ...”

“We kill all the caterpillars, then complain there are no butterflies.”

“Where ignorance is our master, there is no possibility of real peace.”

“You can be used by someone for their aims when you are not aware of your true being”

“Knowledge, like air, is vital to life. Like air, no one should be denied it.”

“Science is organized knowledge. Wisdom is organized life.”

“I definitely learned a lesson this time. I know that I can be broken. I am not as tough as I thought. I see it now. At this point, it's the only thing good that came out of all of this. I know myse...”