“I don't have to agree with you to like you or respect you.” —Anthony Bourdain
I'm adding it to these:
"Be peaceful, be courteous, obey the law, respect everyone; but if someone puts his hand on you, send him to the cemetery." —Malcolm X
"Show proper respect to everyone, love the family of believers, fear God, honor the emperor." —1 Peter 2:17
For anyone who thinks being respectful doesn't mean speaking up, Malcolm X and Simon Peter both died because they continued to speak up.