These first principles quotes capture different sides of the experience — from struggle to strength. Find the lines that resonate and carry them with you.

Some of the most celebrated first principles quotes come from Elon Musk, among many others featured on this page.

Popular first principles quotes include: "Physics is the only real law. Everything else is a recommendation." -- Elon Musk Also: "Answering questions is easy, asking the right questions is what's hard." -- Elon Musk.