Over half a century ago, Albert Einstein invented the theory of relativity. He developed this theory to explain apparent conflicts between the laws of relativity and the law of gravity. To resolve these conflicts, he developed an entirely new approach to the concept of gravity, based on the principle of equivalence. Many people wondered how he could even think up such a great theory and produce a formula like that. That is why most people call Einstein "The Genius."

What is genius? Is it a salutation for people who invent something new? Or does it describe a person who produces a great formula that is useful to us? Genius is a person who has an exceptional intelligence or creative power that not everybody has. It is also the ability to create something new and solve some problems quickly. This wonderful talent cannot be obtained; it comes naturally to...