Jaspers

"the world"(cosmos)is the Idea that we project in order to encompass all possible objective viewpoints, even though such a whole is actually unknowable to us in principle. Likewise, the depths of consciousness that are the ground for the second level of existence are never able to be fully plumbed by anyone, and so they are equally unknowable as a whole, and yet we need some way of thinking about them. So, according to Jaspers, followomg Kant, reason offers the I, the soul, as a useful mode of encompassing consciousness. At the third level, God or Transcendence is the Idea by which to encompass all of being, but the reality of such being is as ineffable as the One envisioned by Plotimus.

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Jaspers說，這個世界其實是我們所投射出來的概念，藉此才有客觀理解世界的可能；但即使如此，這個整體對我們實際而言仍是不可知的。同理，意識的深度是附著於存在(existence)的第二層域，無法被人測得，所以跟整體一樣不可知，然而我們需要某些方法才能思考它們。所以延繼著Kant，Jaspers認為：理性中的我(the I)和靈魂(the soul)包圍意識，可作為思考理解它們的方式。在第三層域，上帝或超然存在(先驗)的概念包含各種存在，但存在的事實是不可言喻，如同Plotinus所看待the One那樣。