there in the book

When asked about the speed of sound, Einstein said that he did not know, but if given 2 minutes then he can look for it in the book and get the answer. The point is he did not bring the information in his head because it's all there in the book and can be read at any time. He also added that the main value of the school / lecture is not to learn or memorize the facts / theories / formulas that exist but to train the brain's ability to think. Think and use your "genius" to achieve your own success, discover your talents and use your brain to turn those talents into something of value for yourself and others.