All data are filtered, observation is necessarily 'theory-laden'.

- Norwood Russell Hanson

The theory, hypothesis, framework, or background knowledge held by an investigator can strongly influence what is observed.

- Norwood Russell Hanson

There is no logical staircase running from the physics of 10-28 cm. to the physics of 1028 light-years.

- Norwood Russell Hanson

Seeing is an experience. People, not their eyes, see. There is more to seeing than meets the eyeball.

- Norwood Russell Hanson