As a statement of general truths, of their relations to one another, and especially to the first principles, it is a science; but it is an art when, regarding truth as an end desired, it points out some of the means of attaining it--namely, to proceed by a regular method, to test every judgment by the principles of Logic, and to distrust whatever cannot be made consistent with them.
Logic does not, in the first place, teach us to reason.

We learn to reason as we learn to walk and talk, by the natural growth of our powers with some assistance from friends and neighbours.

The way to develop one's power of reasoning is, first, to set oneself problems and try to solve them.

Secondly, since the solving of a problem depends upon one's ability to call to mind parallel cases, one must learn as many facts as possible, and keep on learning all one's life; for nobody ever knew enough.

Thirdly one must check all results by the principles of Logic.
It is because of this checking, verifying, corrective function of Logic that it is sometimes called a Regulative or Normative Science.