Courtesy is the golden key to human perfection. —— Sonsuneji

Speaking aggressively does not necessarily mean that what you say is reasonable. —— Sadie

Whether you are a man or a woman, you must be gentle and tolerant to others to deserve the name of a person. A person's true bravery and decisiveness are by no means equivalent to using fists to stop others from speaking. —— Sadie

Having a strong temper can easily cause anger and annoyance. It is a bad habit that makes the mind move towards the improper things. It is an impulsive and irrational action. ——Peter Abelard

Young people should do no harm to others, should give everyone what they have earned, should avoid hypocrisy and deception, and should appear sincere and pleasing to others, so as to learn to behave uprightly. —— Comenius

Courtesy is the first thing in which children and youth should take special care to cultivate their habits. —— John Locke

Courtesy delights those who are polite, and those who are treated with courtesy. ——Montesquieu

Bad things can be learned as soon as they are learned. The bad habits acquired in early years will be shown in all behaviors and actions from then on, whether it is problems in speech or movement, at the age of three Even when you are sixty, you will not change. —— Krylov

Courtesy can often replace the noblest feelings. ——Mérimée

Courtesy is the easiest thing to do and the most precious thing. —— Gonchar

Having a bad temper is one of the more despicable human natures. If a person loses his temper, it is equivalent to taking a step back on the ladder of human progress.

——Darwin