Sin, also for those who don't have faith, exists when one goes against one's conscience. To listen to and obey it means, in fact, to decide in face of what is perceived as good or evil. And on this decision pivots the goodness or malice of our action.

The greatest religion is to be true to your own nature. Have faith in yourselves.

You know the disease, you know the remedy, only have faith.

It is faith that makes a lion of a man.

The history of the world is the history of a few men who had faith in themselves.

He who has no faith in himself can never have faith in God.