We do not learn by inference and deduction and the application of mathematics to philosophy but by direct intercourse and sympathy.

The grand aim of all science is to cover the greatest number of empirical facts by logical deduction from the smallest number of hypotheses or axioms.

The precise point at which a tax deduction becomes a 'loophole' or a tax incentive becomes a 'subsidy for special interests' is one of the great mysteries of politics.

The highest-income Americans don't need tax-free health insurance mortgage interest deductions or deferred taxation on retirement funds.

The two operations of our understanding intuition and deduction on which alone we have said we must rely in the acquisition of knowledge.

We are approaching a new age of synthesis. Knowledge cannot be merely a degree or a skill... it demands a broader vision capabilities in critical thinking and logical deduction without which we cannot have constructive progress.