"We believe in infinite diversity in infinite combinations, but I do not deny that we tend to regard deviation from what is strictly logical as somewhat... shameful. This is accepted in other species as part of their culture, and therefore something to be tolerated, but because I choose to live as a Vulcan, the standards to which I must adhere are no different from any other Vulcan."
So, in essence, he is treated as a Vulcan when it is convenient, and treated as half-human when it is not.
(no subject)
So, in essence, he is treated as a Vulcan when it is convenient, and treated as half-human when it is not.