An artist's studio should be a small space because small rooms discipline the mind and large ones distract it.

Life is tons of discipline.

The discipline of suffering, of great suffering- do you not know that only this discipline has created all enhancements of man so far? That tension of the soul in unhappiness which cultivates its strength, its shudders face to face with great ruin, its inventiveness and courage in enduring, preserving, interpreting, and exploiting suffering, and whatever has been granted to it of profundity, secret, mask, spirit, cunning, greatness - was it not granted to it through suffering, through the discipline of great suffering?

More than those who hate you, more than all your enemies, an undisciplined mind does greater harm.

There is nothing so disobedient as an undisciplined mind, and there is nothing so obedient as a disciplined mind.

Leadership is not only having a vision, but also having the courage, the discipline, and the resources to get you there.