Cosmos harmony

Like ideal health( never can be perfect), we wish( hope) our world could be in harmony and led to happiness. It is wise to allow creative thinking and set a good foundation....open mind suitable to our environment. This time let us think about lbert Eistein.
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Another approach Einstein tried involved extending general relativity to include the equations of electromagnetism by generalizing the metric tensor while keeping the 4-dimensional geometry.
Einstein worked on these two basic approaches persistently for the last thirty years of his life, but neither method ever produced the complete unified theory he was looking for.
He pursued and then soon rejected idea after idea. “Most of my intellectual offspring end up very young in the graveyard of disappointed hopes,” Einstein wrote in a letter in 1938.
But he never gave up on his quest for a unified theory. Even while lying on his deathbed, he continued his work. The day before he died, he asked to have his latest notes brought to him.
One reason for Einstein’s failure to discover a unified theory may be his rejection of quantum mechanics, which caused him to ignore new developments in physics and distance himself from the rest of the physics community. Einstein was aware of his position, and commented in 1954 that "I must seem like an ostrich who forever buries its head in the relativistic sand in order not to face the evil quanta." But the more he worked on unification, the farther away Einstein drifted from the rest of the physics community.
He also became more and more absorbed in formal mathematical arguments, rather than following the physical intuition that had guided him in his youth to his great discoveries.
Many people say that Einstein failed because he was simply ahead of his time. The knowledge and tools needed to complete a unified theory simply hadn’t been developed before Einstein died in 1955.
Today, many physicists are taking up his quest. The most promising approach appears to be string theory, which requires 10 or more dimensions and describes all elementary particles as vibrating strings, with different modes of vibration producing different particles.
String theory has not yet made any testable predictions, and some scientists worry that string theorists have, like Einstein in his later years, strayed too far from physical reality in their obsession with beautiful mathematics. But many others believe string theory does indeed hold the key to completing Einstein’s quest, and researchers are hoping to find ways to test some of the predictions of string theory.
Though his own work never produced a useful physical theory, Einstein established unification as an important goal of physics. Indeed a theory of everything is commonly called the “holy grail” of modern physics. Einstein would probably be pleased that so many physicists are enthusiastically devoting their careers to pursuing his dream.
Ed. Note: As the World Year of Physics draws to a close, we are ending our series of history columns concentrating on Einstein. We are also changing authors. For five years, "This Month in Physics History".

We are happy to see happy out come of wise research( search). Reinvention( base on invention mood) for refreshed power which is a continuation of force we need to carry on happily.
It is useful to think that''perfect practice make perfect''. If you want to elaborate this, try to ask my second son William the example of sport sceince, for example, best result may be seen in correct selection and training method for athelete. Those who start with a wrong grip, just for an example, have a heal lot of trouble trying to change to an effective grip and sport action( such as Badminton).........Try to do it, please my friend.