What can Muslims learn from people of other faiths?

Life is all about mutual learning. All of us should interact with and learn from one another. Learning is a process. It is not restricted only to some specific issues. This is the age of knowledge explosion and learning. One should imbibe the spirit of learning and must learn from one and all. By virtue of being different, each person has experiences to share and learning to offer.

Learning is to be had from everyone. It is not a question of Muslim or non-Muslim. Just as two stones create sparks when rubbed against each other, similarly mutual learning causes brainstorming and leads to emergence of new ideas.

Does Islam allow Muslims to wish people of other faiths on their festivals?

Absolutely! Opportunities for engaging in interaction should never be lost. Greeting others is a part of social ethics, and not a part of belief system. One must strive to live peacefully and humbly in society. A society is a unit of a nation, which is diverse yet interconnected. When the members of a society acknowledge their diversity despite having different beliefs, they nurture a healthy atmosphere of open interaction, mutual learning and peaceful coexistence.