In The Name of Allaah, The Most Merciful, The Bestower of Mercy
Imaam Ibnul Qayyim [rahimahullaah] said:
Its seekers hasten to obtain it to achieve their goals, (such as) exaltedness in the earth; servitude of the hearts to them; inclination towards them; aiding them in all their goals, whilst they are exalted above them and conquered. This pursuit of leadership brings about corruption-which none can enumerate except Allaah- such as rebellion, envy, transgression, enmity, oppression, trials, being ardent in defending oneself at the expense of violating the rights of Allaah, exalting those despised by Allaah and belittling those honoured by Allaah.
[Ar-Rooh’ page 489 slightly paraphrased]