「語言和世界的聯繫在那裡？」是維根士坦整個哲學探討的重點。他後期的「世界」概念的起點是從對他早期的語言概念的批判著手。語言的意義不來自它所指稱的，而是我們如何用語言；每一具體的語言遊戲的文法。語言不是世界的反映，是反映的一形式。用語言本身是種創造性的練習，它表達我們如何看世界。反映形式的重要性就在於它表達的是我們如何看事物，非事物本身如何，世界是我知覺的世界；一種宇宙觀，故世界是如何是意志的問題，非理解的問題。

　　　　　The question “Where do the sign link up with the world?” is of pivoted significance in Wittgenstein's whole philosophy. The starting-point of his later concept of the world is based on a critical reflection of his early concept of language. The meaning of language cannot be given by what is in the world, but how we use language; the grammar of each particular language-game. Language is not a representation of the world, but a form of representation. The use of language itself is a creative practice; it expresses how we look at the world. What is of importance is how we look at things, not how things are in themselves. The world is the “world” I perceive, it is a kind of Weltanschauung. Hence, how the world is is a question of the will, not understanding.