He who allows himself to be insulted deserves to be so; and insolence, if unpunished, increases
He who offends others, does not secure himself
Whenever anyone has offended me, I try to raise my soul so high that the offense cannot reach it
If the other person injures you, you may forget the injury; but if you injure him you will always remember
We should be too big to take offence and too noble to give it
And love the offender, yet detest the offence
Young men soon give, and soon forget, affronts; old age is slow in both
Beware of the man who does not return your blow: he neither forgives you nor allows you to forgive yourself


On Anger: "For every minute you remain angry, you give up sixty seconds of peace of mind."
On Destiny: "Our destiny exercises its influence over us even when, as yet, we have not learned its nature: it is our future that lays down the law of our today."
Human, All Too Human
On Friendship: "A crowd is not company; and faces are but a gallery of pictures; and talk but a tinkling cymbal, where there is no love."