Sentence meaning

Hello , I saw these sentences on acknowledge part of a book and now I want to know the meaning of " The many scientists,rsearchers,colleagues,and patients who contributed to the wealthof information and the truthof this book:LIVING THEIR OWN EXAMPLES OF OUR ANCIENT LIMBIC LOGICS,AND THIER ABILITY TO KEEP IT FRONTAL IN TIMES OF TENSION." I want the capital letter part, the other is just to give the context.thanks