Compare Lenin and Stalin.
These two persons significantly changed Russian history in the first half XX century. Both of them were born in the same period of time (Lenin – 1870, Stalin – 1879), so they represented same age. Lenin was born in Simbirsk in middle class family (his father was a successful local government official) but Stalin was born in a lower class family (his parents were poor peasants) in Georgia. So their lives started totally different. Lenin with a bright future and Stalin with small chance to improve his life.
Their early lives are similar. Both were kicked out of the university (college) because of their revolutionary views. Stalin trained to be a priest and Lenin trained and worked as a lawyer. This fact shows that they were clever and intelligent persons. Both joined the Social-Democratic party at the end of XIX century. The difference in their classes appears when they were exiled. First time Lenin was exiled to the family estates and just second time to Siberia. Other Stalin was exiled straight to Siberia.