There must be must be a first mover existing above all – and this we call God.

Man should not consider his material possession his own, but as common to all, so as to share them without hesitation when others are in need.

Moral science is better occupied when treating of friendship than of justice.

Not everything that is more difficult is more meritorious.

Good can exist without evil, whereas evil cannot exist without good.

We must love them both, those whose opinions we share and those whose opinions we reject, for both have labored in the search for truth, and both have helped us in finding it.

To teach in order to lead others to faith is the task of every preacher and of each believer.