raising a child who shares rationalist thought

Children tend to take on the values of their parents... Just living the "rationalist thought" value around your children will go most of the way to your goal.

What is really hard, IMHO, is raising children with values far different from the values their parents demonstrate. You may like tidiness, but not like cleaning up. Your kids will be probably messy too, no matter how much you want them to be tidy. They may also develop hypocritical tendencies...