Have faith that your child's brain is an evolving planet that rotates at its own speed. It will naturally be attracted to or repel certain subjects. Be patient. Just as there are ugly ducklings that turn into beautiful swans, there are rebellious kids and slow learners that turn into serious innovators and hardcore intellectuals.
… scientific thought does not mean thought about scientific subjects with long names. There are no scientific subjects. The subject of science is the human universe; that is to say, everything that is, or has been, or may be related to man.