Question

which set of lines spoken by sebastian in act iv, scene iii, of twelfth night implies that olivia is not attracted to him simply because she is crazy?
sebastian: this is the air, that is the glorious sun;
this pearl she gave me, i do feelt and seet
and though tis wonder that enwraps me thus,
yet tis not madness. wheres antonio, then?
i could not find him at the elephant;
yet there he was; and there i found this credit,
that he did range the town to seek me out.
his counsel now might do me golden service;
for though my soul disputes well with my sense,
that this may be some error, but no madness,
yet doth this accident and flood of fortune
so far exceed all instance, all discourse,
that i am ready to distrust mine eyes
and wrangle with my reason, that persuades me
to any other trust but that i am mad,
or else the ladys mad; yet if twere so,
she could not sway her house, command her followers,
take and give back affairs and their despatch
with such a smooth, discreet, and stable bearing,
as i perceive she does: theres something int
that is deceivable. but here comes the lady.

Explanation:

Sebastian's lines "Yet 'tis not madness" and "but no madness" directly state that the situation (Olivia's attraction) is not due to madness. He also describes Olivia's ability to "sway her house, command her followers, take and give back affairs and their despatch with such a smooth, discreet, and stable bearing", which implies she is not crazy.

Answer:

The lines "Yet 'tis not madness" and "but no madness" along with the description of Olivia's competent behavior imply that Olivia is not attracted to him simply because she is crazy.