对他们来说，太阳除了投影者外还是什么呢？
一切属于投影的东西都属于命题，而不包含被投影者。
To the proposition belongs everything which belongs to the projection; but not what is projected.
他拒绝研发投影技术，理由是：如果他研发并且销售放映机，电影放映者们就只会从他那里买一台机器，而不是几台。
He refused to develop projection technology, reasoning that if he made and sold projectors, then exhibitors would purchase only one machine—a projector—from him instead of several.
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