Re: being polite and respectful to others requires...
requires:
- patience, tolerance
- knowledge of the fact that nobody is perfect, and a person himself/herself could be wrong sometimes.
knowledge of the fact that respect is always two-way.
and a muslim should remember the hadith that "the best among you is the one who has best manners (akhlaq)".
and another hadith that "meethi baat bhi sadaqah hai" (nice talk is sadaqah).
and a quote (probably from Hazrat Ali) that "the brave is the one who controls his anger".
-^ in short, more knowledge also makes one polite.
...... baqi kal ke khabarnamey mein :D