Writer Quotes and aphorisms about obstacles Ralph Marston Ralph Marston W. E. B. Du Bois ,, From the very first, it has been the educated and intelligent of the Negro people that have led and... Karin Slaughter Orison Swett Marden Orison Swett Marden Washington Irving Ella Wheeler Wilcox ,, No difficulty can discourage, no obstacle dismay, no trouble dishearten the man who has acquired th... Eric Hoffer Henry Drummond