I think one thing that's important to maintain is a sense of fear, always doubting yourself... a good dose of insecurity helps your work in some ways.

The Bluebird of Happiness long absent from his life, Ned is visited by the Chicken of Depression.

Great moments in science: Einstein discovers that time is actually money.

Humans have changed ecosystems more rapidly and extensively than in any comparable period of time in human history, largely to meet rapidly growing demands for food, fresh water, timber, fiber and fuel. This has resulted in a substantial and largely irreversible loss in the diversity of life on Earth.