Poverty is an anomaly to rich people; it is very difficult to make out why people who want dinner do not ring the bell.
Walter BagehotThe maxim of science is simply that of common sense-simple cases first; begin with seeing how the main force acts when there is as little as possible to impede it, and when you thoroughly comprehend that, add to it in succession the separate effects of each of the incumbering and interfering agencies.
Walter Bagehot