Monologuise

The judicious weed will extinguish itself rather than suffer its proprietor to lecture or monologuise.

Source: wiktionary

Unfortunately, no critic (not excluding F. R. Leavis) has paid sufficient attention to this painful and brooding aspect of Egbert's personality, his capacity to monologuise, his delicate yet vivid awareness of the "echo of the new, deep sound, deeper than life" during the terminal moments of his otherwise insignificant life.

Source: wiktionary

And this is what few are as yet able to grasp: that the revolution in store for our age will not be by the left against the right, young against old, black against white, but of small against big. As Hamlet might put it were he to monologuise today: "To be small or not to be at all, that is the question."

Source: wiktionary