This success led my theoretical group to the chemical reactivity theory, extending more and more widely the range of compound and reactions that were discussed.

But the nature of my main work in chemistry can be better represented by more than 280 English publications, of which roughly 200 concern the theory of chemical reactions and related subjects.

I was also interested in formulating the path of chemical reactions.

This simple idea served to provide information on the geometrical shape of reacting molecules, and I was able to make the role of the frontier orbitals in chemical reactions more distinct through visualization, by drawing their diagrams.

The pressures are intense, because the rewards for success and the penalty for failure are more and more.

We are seeing the cells of plants and animals more and more clearly as chemical factories, where the various products are manufactured in separate workshops.