إذا غاب عن الإنسان الفهم والبصيرة بأن كل ماهو مؤقت ليس إلا نوعاً من الوهم، فإنه لن يؤمن إلا بما هو مؤقت. أما إذا رأى ببصيرته أن كل ماهو موقوت ليس إلا … - Leo Tolstoy

"Several times I asked myself, "Can it be that I have overlooked something, that there is something which I have failed to understand? Is it not possible that this state of despair is common to everyone?" And I searched for an answer to my questions in every area of knowledge acquired by man. For a long time I carried on my painstaking search; I did not search casually, out of mere curiosity, but painfully, persistently, day and night, like a dying man seeking salvation. I found nothing."

All were happy — plants, birds, insects and children. But grown-up people — adult men and women — never left off cheating and tormenting themselves and one another. It was not this spring morning which they considered sacred and important, not the beauty of God's world, given to all creatures to enjoy — a beauty which inclines the heart to peace, to harmony and to love.

All we can know is that we know nothing. And that's the height of human wisdom.