For what can be known about God is plain to all, because God is plain to all, because God has shown it to them. Ever since creation of the world His invisible nature, namely His eternal power has been clearly perceived in the things that have been made.
I am no bird; and no net ensnares me: I am a free human being with an independent will.
We are responsible for what we are, and whatever we wish ourselves to be, we have the power to make ourselves. If what we are now has been the result of our own past actions, it certainly follows that whatever we wish to be in future can be produced by our present actions; so we have to know how to act.
A mountain is composed of tiny grains of earth. The ocean is made up of tiny drops of water. Even so, life is but an endless series of little details, actions, speeches and thoughts. And the consequences, whether good or bad of even the least of them, are far-reaching.

