It never occurred to me to doubt that he was real.

It never occurred to her to doubt the warrior's word.

It never occurred to him to doubt whether this letter might not be a hoax.

It never occurred to me to doubt Arethusa's last statement.

It never occurred to me to doubt that message.

But it never occurs to us to doubt our own doubt.

It didn't occur to her to doubt anything she heard.

It never occurred to anybody to doubt the statement.

It never occurred to him to doubt that she was behind it.

His tone was so earnest that it never even occurred to the man to doubt him.