划掉与段落内容无关的两个句子:Read the following paragraph and cross out TWO irrelevant sentences.
He was one of the greatest scientists the world has ever known, yet if I had to convey the essence of Albert Einstein in a single word, I would choose simplicity. Albert Einstein was a famous physicist. His research spanned from quantum mechanics to theories about gravity and motion. Perhaps an anecdote will help. Once, caught in a downpour, he took off his hat and held it under his coat. Asked why, he explained, with admirable logic, that the rain would damage the hat, but his hair would be none the worse for its wetting. This knack for going instinctively to the heart of a matter was the secret of his major scientific discoveries — this and his extraordinary feeling for beauty.