How I see logic

I think it was in 4th grade elementary school, that I first heard of logic.  The teacher introduced it, with some examples to illustrate the use of logic.  I recall that it seemed rather easy to do logic.  All that I had to do was use clear thinking.  So I never did actually try to learn the rules of logic.  I just went by clear thinking, as appropriate.

I am posting this as one of the posts on my own views of philosophical topics.  No doubt my view of logic is partly shaped by the fact that I am a mathematician.  And, as a mathematician, I of course use a lot of logic.  But my basic view is still much the same as in 4th grade.  That is, I see logic as clear thinking.  It is a formalized or formalizable view of clear thinking, but it is nevertheless something that comes from clear thinking.