Introduction

But I shall let the little I have learnt go forth into the day in order that someone better than I may guess the truth, and in his work may prove and rebuke my error. At this I shall rejoice that I was yet a cause whereby such truth has come to light.

ALBRECHT DÜRER

I can now rejoice even in the falsification of a cherished theory, because even this is a scientific success.

JOHN CAREW ECCLES