"Loneliness is not lack of company, loneliness is lack of purpose."

"The essential support and encouragement comes from within, arising out of the mad notion that your society needs to know what only you can tell it."

Scientific rigor must never be compromised by commercial pressures.

The energy industry must adapt and evolve to meet the challenges of the 21st century.

The coal industry must unswervingly follow the path of safe, efficient, clean, and low-carbon development.