What I know for sure is that pleasure is energy reciprocated. What you put out comes back. Your base level of pleasure is determined by how you view your whole life.
So we find that the three possible solutions of the great problem of increasing human energy are answered by the three words: food, peace, work... Their scientific meaning and purpose now clear to me: food to increase the mass, peace to diminish the retarding force, and work to increase the force accelerating human movement.
Until the 1990s, there were few reliable observations about movement at the scale of the entire universe, which is the only scale dark energy effects. So dark energy could not be seen until we could measure things very, very far away.
So if somebody wants to build a coal-powered plant, they can; it's just that it will bankrupt them because they're going to be charged a huge sum for all that greenhouse gas that's being emitted.
The welfare, the happiness, the energy and spirit of the men and women who do the daily workis the underlying necessity of all prosperity.... There can be nothing wholesome unless their life is wholesome; there can be no contentment unless they are contented.
All happiness depends on courage and work. I have had many periods of wretchedness, but with energy and above all with illusions, I pulled through them all.