Quotes about 'Discovery' and all the other ideas embedded in the BOS guidelines might also begin the discussion of conceptual thesis statements. I will give you a famous one to begin with. The only real voyage of discovery consists not in seeing new landscapes, but in having new eyes, in seeing the universe with the eyes of another, of hundreds of others, in seeing the hundreds of universes that each of them sees. – Marcel Proust
There is so much to consider with this Area of Study - easy to get lost in the undergrowth. The concept roadmap we have been given throws up dozens of overlapping possibilities but many of the prescribed texts seem to be conceptually centred, often around a physical journey of some kind that becomes the catalyst for self-reflection and insight. I suppose this was also the case when we started 'Belonging' but juggling all the rubric possibilities for 'Discovery' will take some skill and time before we become as comfortable with it as we were with 'Belonging' or 'The Journey'.
One starting point would be to look at some real exploratory high points and how that experience impacted on the men who were involved and the larger societal ramifications. A good site for this is one designed for a Primary School 'Exploration and Discovery' project learning site. It has some excellent sites for photo essay images of voyages of exploration across the ages. One in particular that would be handy if you were considering the Frank Hurley documentary would be the Shackleton photo essay on the school site on the adjacent file. The 'Eagle has Landed' site 4 is another great photo essay that might be useful for introductory discussion about what 'discovery' signifies and what determining the possible triggers and ramifications.