"Every frame should tell a story, every shot should evoke emotion."

The best way to learn mathematics is to do mathematics.

The coal industry must evolve or risk becoming obsolete. Adaptation is the key to survival.

"A book is a fragile creature, it suffers the wear of time, it fears rodents, the elements and clumsy hands. So the librarian protects the books not only against mankind but also against nature and devotes his life to this war with the forces of oblivion."

"The greatest tragedies are not the ones we see coming, but the ones we never expected."