(noun) Disturbance
"Artists are here to disturb the peace."
"If you are pained by external things, it is not they that disturb you, but your own judgement of them. And it is in your power to wipe out that judgement now."
"Never let the future disturb you. You will meet it, if you have to, with the same weapons of reason which today arm you against the present."
"Do not disturb yourself by picturing your life as a whole."
"I rejoice to live in such a splendidly disturbing time!"
"If there is disturbance in the camp, the general's authority is weak."
"It is not worth the while to let our imperfections disturb us always."