Most of the knowledge was lost with the old world.

To the best of my knowledge they never actually said these words.

However, she seemed to have come to the end of her knowledge.

To the best of his knowledge, she had no life beyond him.

To the best of our knowledge we were very much the first.

To the best of my knowledge, the answer is no.

What of the knowledge that had always just seemed to come to him?

Most of the knowledge was in books, and yet he soon saw that they were not all.

Everyone can do with that sort of knowledge these days.

The physical eye is not enough for the development of knowledge.