Recursion is the root of computation since it trades description for time.

Joy is the emotion which accompanies the fulfillment of our natures when we have lived up to our potential.

The strength of a nation's institutions is not just in their formal rules, but in the informal norms that govern behavior and the degree to which they are internalized by the population.

I will always be grateful to my poor parents. I owe everything to them， my education， my life， and any success I have had.