Do You Put Play Titles In Quotes & Sayings

That small word "Force," they make a barber's block,
Ready to put on
Meanings most strange and various, fit to shock
Pupils of Newton ...
The phrases of last century in this
Linger to play tricks
Vis viva and Vis Mortua and Vis Acceleratrix:
Those long-nebbed words that to our text books still
Cling by their titles,
And from them creep, as entozoa will,
Into our vitals.
But see! Tait writes in lucid symbols clear
One small equation;
And Force becomes of Energy a mere
Space-variation. — James Clerk Maxwell