Cicero: “It is only these mature friendships that can be permanent.”

But for the most part, people are led to wrong-doing in order to secure some personal end; in this vice, avarice is generally the controlling motive.

For we are all attracted and drawn to a zeal for learning and knowing; and we think it glorious to excel therein, while we count it base and immoral to fall into error, to wander from the truth, to be ignorant, to be led astray.

There are, on the other hand, two kinds of injustice--the one, on the part of those who inflict wrong, the other on the part of those who, when they can, do not shield from wrong those upon whom it is being inflicted.

Accordingly, in encountering danger we should do as doctors do in their practice: in light cases of illness they give mild treatment; in cases of dangerous sickness they are compelled to apply hazardous and even desperate remedies.