Martin Nowak Professions : Professor Born : 1965 Browse All Authors Famous Quotes by Martin Nowak Many problems that challenge us today can be traced back to a profound tension between what is good and desirable for society as a whole and what is good and desirable for an individual. That conflict can be found in global problems such as climate change, pollution, resource depletion, poverty, hunger, and overpopulation. Martin Nowak humanity challenges profound Courage means going forward without doubt. If you believe you have courage, you have courage. Martin Nowak courage mean believe Similar Authors Bryan Stevenson professor Bruce Greenwald professor Bruce Ames professor Brian Wansink professor Brian Schmidt professor Brian Martin professor All Authors