Great Ideas Require Full Concentration

Isaac Newton was invited for dinner by a close friend. Newton reached the place late and sat down in the living room without informing anyone of his arrival. His friend, having waited a while, had concluded that Newton had been held up on some account. He had assumed that Newton was not coming, had eaten his dinner, and gone to bed.

Newton, completely engrossed in important scientific matters, sat in the living room all night, having forgotten about both eating and sleeping.

The next morning, his host spotted him sitting in the living room. His friend was naturally upset and Newton apologized to him profusely.