Natural graces, that extinguish art. [ William Shakespeare ]

Delays increase desires, and sometimes extinguish them. [ Proverb ]

No man can be so entirely a devil as to extinguish in himself the last ray of light. [ Th. Körner ]

Perseverance merits neither blame nor praise; it is only the duration of our inclinations and sentiments, which we can neither create nor extinguish. [ Rochefoucauld ]

If the true spark of religious and civil liberty be kindled, it will burn. Human agency cannot extinguish it. Like the earth's central fire, it may be smothered for a time; the ocean may overwhelm it; mountains may press it down; but its inherent and unconquerable force will heave both the ocean and the land, and at some time or other, in some place or other, the volcano will break out and flame up to heaven. [ Daniel Webster ]