The real duty of man is not to extend his power or multiply his wealth beyond his needs, but to enrich and enjoy his imperishable possession: his soul.

What is politics but persuading the public to vote for this and support that and endure these for the promise of those?

A good teacher is a determined person.

Language is a living thing. We can feel it changing. Parts of it become old: they drop off and are forgotten. New pieces bud out, spread into leaves, and become big branches, proliferating.

The communities and countries best at using energy to optimize a microclimate for human life are also the ones whose people have the longest average lifespans. Canada, Sweden, and Iceland - places with inhospitable winter weather - are frontrunners in sustaining human health and life.

When I was younger, my food and fitness were less controlled - I just loved football.

You can spend a lot of money on education, but if you don't spend it wisely, on improving the quality of instruction, you won't get higher student outcomes.

During that year at Harvard learning with Carl Steinitz, I had the feeling that I was drinking knowledge out of a fire hose. I learned more in that year than I had learned in the previous ten years of my education.