The art of progress is to preserve order amid change and to preserve change amid order.

The art of progress is to preserve order amid change, and to preserve change amid order. Life refuses to be embalmed alive.

Fundamental progress has to do with the reinterpretation of basic ideas.

Art flourishes where there is a sense of adventure.

Art attracts us only by what it reveals of our most secret self.

In formal logic, a contradiction is the signal of defeat, but in the evolution of real knowledge it marks the first step in progress toward a victory.