We are not selling water, we are selling health and quality of life.
The concept of a Turing machine is foundational to our understanding of computation.
【原文】季文子三思而后行。子闻之曰:“再,斯可矣。”【译文】季文子遇事总要思考三次,然后才行动。孔子听说后,说:“思考两次就可以了。”
The increase of national wealth depends chiefly upon the increase of production.