You must never aspire to 'finish' a house, you can merely hope to start it, and from then on it's an evolutionary process.
“As a privileged survivor of the First World War, I hope I may be allowed to interject here a deeply felt tribute to those who were not fortunate enough to succeed, but who shared the signal honor of trying to the last to salvage peace.”
“The problem is that no ethical system has ever achieved consensus. Ethical systems are completely unlike mathematics or science. This is a source of concern.”