I infinitely thank Lucia Amendola Ranesi, together with Mari’s Manual, for the opportunity to discover the book Quattro Terzi Pi Greco Erre Tre which I loved very much.

What is the volume of the sphere? Four Thirds Pi r3.

It is not the first time that I have told my interest in books on mathematics, but in this case I was immediately struck by the affinity of thought.

Starting with a formula to tell a story. 

Or starting from a story to tell a formula.

Actually both.

The “formula” to which one arrives, however, is not a calculation, but a journey that leads, or rather: brings back, to the origin.

I don’t like to reveal too much, because I would like you to try the same engaging reading experience that I had, and I would like you too to come to the “full circle” with all the load of emotions that accompanied me.

I considered Quattro Terzi Pi Greco Erre Tre as the equation of a world in which to enter through a wonderful exchange of letters, precisely those handwritten letters, the letters  so dear to me.

A family sphere, but also a historical sphere.

And through the life of the characters I first understood the vocation: the passion for studying and teaching, together, as in a real union that lasts for a lifetime.

But the book also teaches that fate is not always behind the things that scare us the most.

And it shows how pure and true love cannot in any way be dirtied.

I will certainly not forget a special Grandmother, whom I wish I could hug as she repeats that all soldiers are sons.

And a special woman: Maria Moreno, who I hope will be remembered for her ability to combine literary and scientific studies, delicacy and strength of mind, poetry and everyday life.

Obviously I tend to focus more on the female characters, but undoubtedly Rodolfo too, as well as two important figures who have left a mark on our history, offer very interesting reflections.

What if I told you Renato Caccioppoli? What if I told you Ettore Majorana?

In a book so close to my heart, could coffee be missing?!

Obviously not! In fact, here it is: