Imagination is more important than knowledge. For knowledge is limited, whereas imagination embraces the entire world, stimulating progress, giving birth to evolution. ~ Albert Einstein (born 14 March 1879)
E = mc2. Albert Einstein
It's the world's most famous equation, but what does it really mean?
"Energy equals mass times the speed of light squared." On the most basic level, the equation says that energy and mass (matter) are interchangeable; they are different forms of the same thing.