What do other characters say about this character?

Orsino sees Viola's feminie allure even through her disguise. Thus, he believes her to be the perfect messenger to send to Olivia.

"Dear lad, believe it.

For they shall yet belie thy happy years

That say thou art a man. Diana’s lip

Is not more smooth and rubious. Thy small pipe

Is as the maiden’s organ, shrill and sound,

And all is semblative a woman’s part.

I know thy constellation is right apt

For this affair."