I often see the word "assertion" in books of philosophy of language or logic. They may list a sentence like
Snow is white.
Then somewhere in the context, they may write "assertion of the sentence". I'm confused about the meaning of the word "assertion". In the following sentences, which is equivalent to which?
- Snow is white.
- "Snow is white" is true.
- assert snow is white
- assert "Snow is white" is true
- think/believe snow is white
- think/believe "Snow is white" is true
- say "Snow is white"
Based on my understandings of the other answers, I give some thoughts(not necessarily true) on my question. A sentence listed on a single line is an assertion like
Snow is white
But when describing the assertion somewhere in the context, we cannot write "Snow is white" is ... because that is describing a sentence not an assertion. We cannot either write Snow is white is ... because it is not correct in syntax. It seems the only way to repeat the assertion in context is the assertion that snow is white(or the assertion of "Snow is white") is .... That is why the word "assertion" frequently occurs in context.
So, 1,2,3,4 in the question are equivalent to each other(1,2 are equivalent according to Tarski's T-Scheme, as are 3,4). Assert is stronger than think/believe which are stronger than say.