What is important – what I consider success – is that we make a contribution to our world. Ben Carson
I set my sights upon becoming the kind of artist who would make a contribution to art history. Judy Chicago
It is only since linguistics has become more aware of its object of study, i.e. perceives the whole extent of it, that it is evident that this science can make a contribution to a range of studies that will be of interest to almost anyone. Ferdinand de Saussure
Chemistry itself knows altogether too well that - given the real fear that the scarcity of global resources and energy might threaten the unity of mankind - chemistry is in a position to make a contribution towards securing a true peace on earth. Kenichi Fukui
(.. as a practicing artist) You're competing against who came before and came after. You're just another stone in the wall, and if you make a contribution you're lucky. Richard Serra
The men who create power make an indispensable contribution to the Nation's greatness, but the men who question power make a contribution just as indispensable. John F. Kennedy