Cherish your doubts, for doubt is the attendant of truth. Doubt is the key to the door of knowledge; it is the servant of discovery. A belief which may not be questioned binds us to error, for there is incompleteness and imperfection in every belief. Doubt is the touchstone of truth; it is an acid which eats away the false. Let no one fear for the truth, that doubt may consume it; for doubt is a testing of belief. The truth stands boldly and unafraid; it is not shaken by the testing; For truth, if it be truth, arises from each testing stronger, more secure. Those that would silence doubt are filled with fear; their houses are built on shifting sands. But those who fear not doubt, and know its use; are founded on rock. They shall walk in the light of growing knowledge; the work of their hands shall endure. Therefore let us not fear doubt, but let us rejoice in its help: It is to the wise as a staff to the blind; doubt is the attendant of truth.

- Robert Weston