Judging book by its cover, which means you shouldn't prejudge the worth or value of something or people, by its outward appearance alone. Because after taking a deeper look, the person or thing may be very different than what was expected. Not a little amount of people lose their confidence, being depressed and trying so hard to be someone they are not because of the society's cruelty.
Physically, a woman should be strong enough to give birth to a baby which exceed the pain a human being can take. Mentally, a woman should be strong enough to be a pillar, a light in her family.