“The basic question of philosophy can be formulated as follows: "What are the criteria for a right life?"”
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Zafar Mirzo 149
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Interview http://www.ornl.gov/info/ornlreview/rev28-1/text/wbgbar.htm by Bill Cabage and Carolyn Krause for the ORNL Review (April 1995).

Two scientific activities are equally valid if they achieve results that are true. Now, how do you decide which activity is more valuable? The question of value is the basic question that the scientific administrator asks so that decisions can be made about funding priorities.
Interview http://www.ornl.gov/info/ornlreview/rev28-1/text/wbgbar.htm by Bill Cabage and Carolyn Krause for the ORNL Review (April 1995).

The Singularity Is Near: When Humans Transcend Biology (2005)

Richard Courant, What is Mathematics?, (1941) p. xix
Source: Leisure, the Basis of Culture (1948), The Philosophical Act, p. 63