I've definitely had a few moments in my life where I've seen somebody and it's blown me away at first sight, but I guess of those few scenarios, none of them have been like... I'm not married.
The first principle from which stems the moral of about all people at all time; it is summarized in this precept: Love thy neighbour as thyself, and: do as you would be done by.
Women are tenacious, and all of them should be tenacious of respect; without esteem they cannot exist; esteem is the first demand that they make of love.