A tree's shade is worth more than the knowledge of truth, my sons, for a tree's shade is true while it lasts, and the knowledge of truth is false in its very truth. The leaves' greenness is worth more, for a right understanding, than a great thought, for the leaves, greenness is something you can show others, but you can never show them a great thought. We are born without knowing how to talk and we die without having known how to express ourselves. Our life runs its course between the silence of one who cannot speak and the silence of one who wasn't understood, and around it hovers - like a bee where there are no flowers - a useless, inscrutable destiny.