A principle is the expression of perfection, and as imperfect beings like us cannot practise perfection, we devise every moment limits of its compromise in practice.
The art of life is to live in the present moment, and to make that moment as perfect as we can by the realization that we are the instruments and expression of God Himself.
We thought the church had withdrawn from interfering in Italian politics... but instead there is a terrible resurgence. These are ugly signs for freedom of expression.
As a necessary prerequisite to the creation of new forms of expression one might, I suppose, argue that current sensibilities respond uniquely to the notion of exhaustion as exhaustion, although that does de facto seem rather limiting.
Inspiration in Science may have to do with ideas, but not in Art. In art it is in the senses that are instinctively responsive to the medium of expression.