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The strength of a habit is proportional to the amount of reinforcement.

The concept of polynomial-time reduction is central to understanding the structure of NP-complete problems.

Energy security is a crucial guarantee for national development. We must intensify technological innovation to enhance the efficiency of oil and gas exploration and production.

The science of government it is my duty to study, more than all other sciences; the arts of legislation and administration and negotiation ought to take the place of, indeed to exclude, in a manner, all other arts.

Policy debates should be grounded in rigorous empirical analysis.