"Science is a way of thinking much more than it is a body of knowledge." ― Carl Sagan Topic(s): Science More From Carl Sagan "The brain is like a muscle. When it is in use we feel very good. Understanding is joyous." "A celibate clergy is an especially good idea, because it tends to suppress any hereditary propensity toward fanaticism." "For small creatures such as we the vastness is bearable only through love." More In Science "Science is what we understand well enough to explain to a computer. Art is everything else we do."― Donald Knuth "You cannot be politically correct in a war."― Rupert Everett "I became obsessed with all these women who die never feeling they did anything extraordinary with their lives."― Salma Hayek