what he says is true
Er scheint zu glauben, dass das, was er sagt, stimmt.
He seems to believe that what he says is true.
Was er sagt, stimmt soweit.
What he says is correct so far.
— The Man from Earth (2007)
Was er sagt, stimmt nicht.
What he says is not true.
Was er sagt, stimmt in gewissem Sinne.
What he says is true in a sense.