Photography acts as a teaser, suggesting we can know something that we can never know. And the more we can't obtain it, the more we want it.

- Alison Jackson

If we introduce iron complexly into ooporphyrin, we obtain haemin.

- Hans Fischer

I obtain great satisfaction out of using my intellect.

- Temple Grandin

That which we obtain too easily, we esteem too lightly.

- Thomas Paine