No amount of skillful invention can replace the essential element of imagination. Edward Hopper
nothing suffers annihilation, but at dissolution there is a change, and things fall back to the essential element in which they were before. Vitruvius
To my mind the single essential element on which all discoveries will be dependent is human freedom. Barry Goldwater
No problem can be solved until it is reduced to some simple form. The changing of a vague difficulty into a specific, concrete form is a very essential element in thinking. J. P. Morgan
Africa's progress will depend on unleashing economic growth -- not just for the few at the top, but for the many, because an essential element of dignity is being able to live a decent life. That begins with a job. And that requires trade and investment. Barack Obama
The essential element of successful strategy is that it derives its success from the differences between competitors with a consequent difference in their behavior. Bruce Henderson