e. The truth-value fulfills one role of judgeable-content: it is the value of concepts (functions)."2 Rules of asserting, thinking, judging, and inferring follow from the laws of truth. The truth-value is tied to assertions.
To Frege, thoughts are what are judged, asserted, or entertained. They are either true or false and stand in contrast to ideas. "Thoughts are existence- and identity-independent of a bearer (thinker)."2 Thoughts are also public and can be shared with others, and are also held in reality. The only sentences that can express a complete thought are declarative sentences. Yet Frege points out that non-declarative sentences can have meaning. For example 'Help! I am trapped' expresses an idea that has meaning.
This moves us to what ideas are. Ideas cannot be seen or touched as they are private. They are that which helps us in our denotation of sentences. Frege believes that ideas (sense) are had. One has sensations, feelings, moods, inclinations, and wishes. An idea, which someone has, belongs to the content of his consciousness. Ideas need a
bearer and every idea has only one bearer."3 Qualities are examples of ideas. For example red or bitter are ideas.
The difference between thoughts and ideas is that thoughts are of objects, which can be touched and seen. They are not only inside of the mind. He suggests that every word in a sentence has a name, but he recognizes that "names without content (that do not 'stand for anything') may nevertheless contribute to the judgeable-content expressed. They have sense, but lack reference."4 The thoughts are what truth claims are ma
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