If you keep feeling a point that has been sharpened, the point cannot long preserve its sharpness.Lao Tzu
To know yet to think that one does not know is best; Not to know yet to think that one knows will lead to difficulty.Lao Tzu
Masterpieces are not single and solitary births; they are the outcome of many years of thinking in common, of thinking by the body of the people, so that the experience of the mass is behind the single voice.Virginia Woolf
Thought and theory must precede all salutary action; yet action is nobler in itself than either thought or theory.Virginia Woolf