1 “... have tried to assign priority for results appropriately. We will cheerfully accept corrections...”

2 “... skilfully and, as always, cheerfully typed the manuscript and did the proofreading...”

3 “... appreciation to the many colleagues and staff members whose cheerful help made the Symposium a successful...”

4 “... for the second edition. My wife, Barbara, again cheerfully assisted in the proofreading. Fred Leone kindly...”