ILYA,
I know how hard you are working. It can be very discouraging at times. I can only wish you every success. It's times like these that one can feel 'a little bit down' -- but you must hold on -- like the English bull-dog we had -- who when fighting any other dog just simply went for the throat and shook the hell out of other dog till it was dead! You will have to hold on like that bull-dog! It's just that last little ounce of energy that will help you win. And when you read such books as that of the 'Autobiography' of Norbert Wiener, it makes you think and helps to inspire you.
You will succeed. I am certain.
Best wishes always,
David
Villars, 25.05.2014