New Brevoort Formspring

As an adult Xavier never showed himself to pursue deadly means to stop a threat, even in his rivalry with Magneto; so why did he do it to a baby, his sister no less, before she had committed any malicious deeds? The second matter is that of Xavier’s psychic powers: in most all cases of mutant powers, especially non-physical abilities such as telepathy and telekinesis, these abilities do not emerge until adolescence; how did Professor X have them as a baby,