Question

I need to come up with a suitable definition, translation....broken down meaning for this statement please. " the other in us always seems alien and unacceptable; but if we let ourselves be aggrieved, the feeling sinks in and we are the richer for this little bet of self-knowledge" . Thank You.
Writeacher
First of all, you need to let us know what YOU THINK it means.

What do you think "the other" means? That's where you have to start.