"From each according to his ability, to each according to his needs" is a slogan popularised by Karl Marx in his 1875 Critique of the Gotha Program. The principle refers to free access to and distribution of goods, capital and services.

What does from each according to his ability to each according to his contribution mean?

To each according to his contribution was a concept espoused by many members of the socialist and labor movement. ... The term means simply that each worker in a socialist society receives compensation and benefits according to the quantity and value of the labor that he or she contributed.

Who wrote from each according to his abilities to each according to his needs?

This line was written by Karl Marx in the Critique of the Gotha Program (1875). So Karl Marx had a lot of big ideas, which is why we're still studying Marxism today. He had a lot to say about equality, power, and society, and his ideas applied to everything from literary theory to government.