Every human being has paid the earth to grow up. Most people don’t grow up. It’s too damn difficult. What happens is most people get older. That’s the truth of it. They honor their credit cards, they find parking spaces, they marry, they have the nerve to have children, but they don’t grow up. Not really. They grow older. But to grow up costs the earth, the earth. It means you take responsibility for the time you take up, for the space you occupy. It’s serious business. And you find out what it costs us to love and to lose, to dare and to fail. And maybe even more, to succeed. What it costs, in truth.

Maya Angelou (1928-2014) American poet, memoirist, activist [b. Marguerite Ann Johnson]

“Maya Angelou, The Art of Fiction No. 119,” Interview with George Plimpton, The Paris Review (Fall 1990)
    (Source)

Angelou used the core section (credit cards, parking spaces) a number of times in different interviews.