"The brain is like a muscle. When it is in use we feel very good. Understanding is joyous." ― Carl Sagan Topic(s): Good More From Carl Sagan "We have also arranged things so that almost no one understands science and technology. This is a prescription for disaster. We might get away with it for a while, but sooner or later this combustible mixture of ignorance and power is going to blow up in our faces." "We’ve arranged a civilization in which most crucial elements profoundly depend on science and technology." "Personally, I would be delighted if there were a life after death, especially if it permitted me to continue to learn about this world and others, if it gave me a chance to discover how history turns out." More In Good "Greek philosophy seems to have met with something with which a good tragedy is not supposed to meet, namely, a dull ending."― Karl Marx "The opportunity for doing mischief is found a hundred times a day, and of doing good once in a year."― Voltaire "The more man meditates upon good thoughts, the better will be his world and the world at large."― Confucius