He was so small when he was born that his mother, Hannah Ayscough, claims that he could fit into a quart-size mug.
Newton actually showed very little interest in his students and teaching, resulting in poorly attended lectures. Historians even state that most students could not understand his lectures at all. He preferred to center his time around research which took up most of his attention.
Newton was born prematurely on January 4, 1643, and had a very low chance of survival.