Peter Kropotkin was surely on the left. He was one of the founders of what is now called 'sociobiology' or 'evolutionary psychology' with his book Mutual Aid, arguing that human nature had evolved in ways conducive to the communitarian anarchism that he espoused.
Noam ChomskyIn our society, real power does not happen to lie in the political system, it lies in the private economy: thatโs where the decisions are made about whatโs produced, how much is produced, whatโs consumed, where investment takes place, who has jobs, who controls the resources, and so on and so forth. And as long as that remains the case, changes inside the political system can make some difference-I donโt want to say itโs zero-but the differences are going to be very slight.
Noam ChomskyUnaccountable private power concentrations that dominate economic and social life have the means to seek to "regiment the public mind," and become "tools and tyrants" of government, in James Madison's memorable phrase, as he warned of the threats he discerned to the democratic experiment if private powers were granted free rein.
Noam ChomskyThe Republicans have picked that as the one thing that they want to hang on to to try to gain some political stand, so they have to destroy what they call Obamacare. This is now not all the Republicans, it's a wing of the Republican Party, which is called conservative but in fact is just deeply reactionary.
Noam Chomsky