A general definition of civilization: a civilized society is exhibiting the five qualities of truth, beauty, adventure, art, peace. - Alfred North Whitehead

Panic of error is the death of progress, and love of truth is its safeguard.

The ideas of Freud were popularized by people who only imperfectly understood them, who were incapable of the great effort required to grasp them in their relationship to larger truths, and who therefore assigned to them a prominence out of all proportion to their true importance.

If science is not to degenerate into a medley of ad hoc hypotheses, it must become philosophical and must enter upon a thorough criticism of its own foundations.