The Paladin's Virtues

An organized approach brings the most good for all.

Laws exist to bring prosperity to those under them.

Unjust laws must be overturned or changed in a reasonable and positive fashion.

People rule; Laws help.

Cause the most good through the least harm.

Protect the weak

Goodness is not a natural state, but must be fought for to be attained and maintained.

Lead by Example

Let your deeds speak your intentions.

Goodness radiates from the heat.

Give others your mercy, but keep your wits about you.

 
From: The Forgotten Realms Campaign Book; a Grand Tour of the Realms by Ed Greenwood and Jeff Grubb.
 
Paladins are expected to live by a strict code of conduct, not by something like the Boy Scout code, if you can come up with a better code for your character then you can work it out with the DM.
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