"For my part, whatever anguish of spirit it may cost, I am willing to know the whole truth; to know the worst, and to provide for it." Patrick Henry
"More law, less justice".
Cicero
Keynes believed the new capitalist under the gold standard didn't consume their wealth because they grew up poor and simple and because of that didn't have a strong desire to consume.
I think however that delaying consumption comes from both low time preference of hard money, as it's thoroughly explained by Saifedean, but also because sacrifice is greater than consumption.
There are endless examples of those who obtain wealth reaching for discipline, minimalism, and sacrifice, because those are true virtues, and virtue is what our hearts long for. He discounts that the billionaire can live much the same life as the peasant, not because the billionaire is incapable of a lavish lifestyle, but because virtue provides a deeper meaning and sustenance then consumption.