Galileo Galilei, a contemporary of Kepler, built a telescope and began fixing its lens on the planets. He made a series of remarkable discoveries: that the moon was not flat and smooth, there were spots on the sun, Jupiter had moons that orbited it, Venus had phases like the moon, which proved th...

he was interested in EVERYTHING. Curious about all kinds of topics, he continued to ask questions like children of today do (why is the sky blue for example, one he answered in his journals) until his death. He even had long to-do lists filled with odd questions.

He dissected animals and pe...

• He became more patient over his career: He learned not to rush things that needed more work. He learned how to be more sensitive to the physical limits of people.
• He overprepared for Apple presentations: Steve spent months preparing for his pro...