Historically, deciding whether to use the V or T form was determined by the power relationship between the interlocutors. Lower status persons addressed higher status persons with the V form; conversely higher status persons addressed lower status with the T form.

Lukewarmers such as me accept that global warming is real, but not that it's entirely man-made or that it's dangerous.

Indeed I lost patience altogether, and asked myself by what right this informal votary of form pretended to run riot through a poor charmed flaneur’s quiet contemplations, his attachment to the noblest of pleasures, his enjoyment of the loveliest of cities.

Renan said that “if Christianity had been arrested in its progress by any mortal defect, the world would have been Mithraized”.