Harlow would later write, "If monkeys have taught us anything, it's that you've got to learn how to love before you learn how to live.

The imagination is unleashed by constraints. You break out of the box by stepping into shackles.

The answer will only arrive after we stop looking for it.

Harlow would later write, "If monkeys have taught us anything, it's that you've got to learn how to love before you learn how to live.

Grit is the stubborn refusal to quit.

By the age of 3, children from wealthier households hear, on average, about 500,000 encouragements and 80,000 discouragements. The ratio is reversed in households on welfare.

there simply is no way to describe the past without lying. Our memories are not like fiction. They are fiction.