Behavior Quote

Humans are the only species that deliberately deprive themselves of sleep for no apparent gain - Matthew Walker
The core message is a stark one: our chronic sleep loss is a uniquely human, and utterly illogical, act of self-sabotage.

Quotes about change

Small changes can produce big results—but the areas of highest leverage are often the least obvious - Timothy Ferriss
The core idea is about leverage. It's not about working harder, but about finding that one tiny, almost invisible switch that, when flipped, changes everything.