Nature has inclined us to love men.

The harvest of old age is the recollection and abundance of blessing previously secured.

It is better to receive than to do injury.

The greatest incitement to guilt is the hope of sinning with impunity.

Not to know what happened before you were born is to be a child forever. For what is the time of a man, except it be interwoven with that memory of ancient things of a superior age?

True law is right reason in agreement with nature;...it summons to duty by its commands, and averts from wrongdoing by its prohibitions... It is a sin to try to alter this law, nor is it allowable to attempt to repeal any part of it, and it is impossible to abolish it entirely.

Friendship was given by nature to be an assistant to virtue, not a companion in vice.