A colt is worth little if it does not break its halter.
Anybody who gets away with something will come back to get away with a little bit more.
Better to be pruned to grow than cut up to burn.
Blind and unwavering undisciplined at all times constitutes the real strength of all free men.
Brave is the lion tamer, brave is the world subduer, but braver is the one who has subdued himself.
Discipline is not a nasty word.
Discipline is the refining fire by which talent becomes ability.
Discipline is the soul of an army. It makes small numbers formidable; procures success to the weak, and esteem to all.
Discipline must come through liberty. We do not consider an individual disciplined only when he has been rendered as artificially silent as a mute and as immovable as a paralytic. He is an individual annihilated, not disciplined.
He conquers twice who conquers himself in victory.
He who lives without discipline dies without honor.
If thou wouldn't conquer thy weakness thou must not gratify it.
If we do not discipline ourselves the world will do it for us.
If you once turn on your side after the hour at which you ought to rise, it is all over. Bolt up at once.
If you will discipline yourself to make your mind self-sufficient you will thereby be least vulnerable to injury from the outside.
It doesn't matter what you're trying to accomplish. It's all a matter of discipline. I was determined to discover what life held for me beyond the inner-city streets.
Lack of discipline leads to frustration and self-loathing.
Look upon your chastening as God's chariots sent to carry your soul into the high places of spiritual achievement.
Make your educational laws strict and your criminal ones can be gentle; but if you leave youth its liberty you will have to dig dungeons for ages.
No evil propensity of the human heart is so powerful that it may mot be subdued by discipline.