...the question, Why try for greatness? would seem almost tautological. If you're doing something you care that much about, and you believe in its purpose deeply enough, then it is impossible to imagine not trying to make it great. It's just a given.
Source: Good to Great: Why Some Companies Make the Leap... and Others Don't, Pages: 208
History, though, shows us that the people who end up changing the world—the great political, scientific, social, technological, artistic, even sports revolutionaries—are always nuts, until they’re right, and then they’re geniuses.
Source: Overachievement: The New Model for Exceptional Performance
Philosophy takes as her aim the state of happiness...she shows us what are real and what are only apparent evils. She strips men's minds of empty thinking, bestows a greatness that is solid and administers a check to greatness where it is puffed up and all an empty show; she sees that we are left no doubt about the difference between what is great and what is bloated.
Greatness means leading the way.- No stream is large and copious of itself, but becomes great by receiving and leading on so many tributary streams. It is so, also, with all intellectual greatnesses. It is only a question of some one indicating the direct
It's the little things you do that can make a big difference. What are you attempting to accomplish? What little thing can you do today that will make you more effective? You are probably only one step away from greatness.