Day in and day out, all of us interact with people (directly and indirectly) and their thoughts etc., for one reason or another. Some of these thoughts capture different audiences' imaginations in indelible ways to an extent that they become "quotable quotations," that are memorable and intriguing to some people and not others.
Please list one (1) or two (2) memorable and intriguing quotations that you have ever come across. These can be from any facet of life; sport, politics, economics, environment, science etc.,
For the benefit of all of us, please state who the quotation is attributed to as well as the facet of life the person associated with the quotation operates in. If at all possible, please also share with us why you found the quotation memorable and intriguing.