Sentence:  <WSD>Prudence</WSD> is principally in reference to actions to be done, and due means, order, seasons, and method of doing or not doing. - Sir Matthew Hale. / <WSD>"Prudence</WSD> supposes the value of the end to be assumed, and refers only to the adaptation of the means. It is the relation of right means for given ends." - William Whewell. 
Meaning of the word marked with <WSD> tags:  The quality or state of being prudent; wisdom in the way of caution and provision; discretion; carefulness; hence, also, economy; frugality.