"If there is no struggle, there is no progress"

"Finds progress, man's distinctive mark alone, Not God's, and not the beast's; God is, they are, Man partly is, and wholly hopes to be"

"Progress is man's ability to complicate simplicity"

"Problems are the price of progress. Don't bring me anything but trouble. Good news weakens me"

"The power to question is the basis of all human progress"

"Progress is what happens when impossibility yields to necessity"

"The natural progress of things is for liberty to yield and government to gain ground"

"If virtue promises happiness, prosperity and peace, then progress in virtue is progress in each of these for to whatever point the perfection of anything brings us, progress is always an approach toward it"

"Without continual growth and progress, such words as improvement, achievement, and success have no meaning"

"Nature gives to every time and season some beauties of its own; and from morning to night, as from the cradle to the grave, it is but a succession of changes so gentle and easy that we can scarcely mark their progress"

"Healthy discontent is the prelude to progress"