From which Star Trek The Next Generation comes this image:
And exactly in what scene it appears? What Picard is saying at the very moment, that is pictured?
In the episode "Ménage à Troi", a Ferengi captures Riker, Deanna, and Lwaxana Troi. Picard acts like he loves Lwaxana Troi to show the Ferengi that he will do anything to get her back. He does so by reciting Shakespeare:
"My love is a fever, longing still For that which longer nurseth the disease." "In faith, I do not love thee with mine eyes, For they in thee a thousand errors note; But 'tis my heart that loves what they despise; Who in despite of view is pleas'd to dote."
The image taken comes from this moment.
(Edit: Added that he pretends to love Lwaxana Troi, not just "Troi", thanks for the comment)