I would like to know whether or not a verb in its bare infinitive form can be used as the subject of a sentence.
In other words, is it grammatically correct to say:
Do what her/his mother asks is something a child has to learn.
I have checked a few grammar books and none mentions this use (if any). Still, it does not necessarily exclude the case.
Thanks.
[Added] If possible, I would appreciate it if a reference source can be provided to support your input. Many thanks for the discussion.