“To know and yet (think) we do not know is the highest (attainment); not to know (and yet think) we do know is a disease.”

“To know that you do not know is the best.To think you know when you do not is a disease.Recognizing this disease as a disease is to be free of it.”

“We may know ourselves, and yet even with all the efforts we make, we do not know ourselves. We know our fellowman, and yet we do not know him, because we are not a thing, and our fellowman is not a thing. The further we reach into the depths of our being, on someone else's being, the more the goal of knowledge eludes us.”

“We do not know what to do with this short life, yet we yearn for another that will be eternal.”

“No sense of the irony of human experience, that we are the highest form of life on earth, and yet ineffably sad because we know what no other animal knows, that we must die.”

“We do not know what we want and yet we are responsible for what we are - that is the fact. ”