“Wide horizons lead the soul to broad ideas; circumscribed horizons engender narrow ideas; this sometimes condemns great hearts to become small minded.Broad ideas hated by narrow ideas,—this is the very struggle of progress.”

“Let no one misunderstand our idea; we do not confound what are called 'political opinions' with that grand aspiration after progress with that sublime patriotic, democratic, and human faith, which, in our days, should be the very foundation of all generous intelligence.”

“No army can stop an idea whose time has come”

“An invasion of armies can be resisted, but not an idea whose time has come”

“No army can withstand the strength of an idea whose time has come.”

“One resists the invasion of armies; one does not resist the invasion of ideas.”

“No force on earth can stop an idea whose time has come”