Howard Zinn said this quote
“ If history is to be creative, to anticipate a possible future without denying the past, it should, I believe, emphasize new possibilities by disclosing those hidden episodes of the past when, even if in brief flashes, people showed their ability to resist, to join together, occasionally to win. I am supposing, or perhaps only hoping, that our future may be found in the past's fugitive movements of compassion rather than in its solid centuries of warfare. ”