That doesn't mean everybody admired him. Three famous people rejected his fifth postulate (statement) and they were Albert Einstein, Nikolai Ivanovich Labachevski, and Georg Frederick Bernhart Riemann. The geometry he systematized was considered the only geometry until the time of Renaissance painters. A friend who studied with Euclid asked him "what should I get by learning these things." Euclid called to his slave and said; "give my friend three pence since he must gain out of what he learns." There is always a situation where you use what you learn. Another time Euclid was explaining "Elements" to a king when the king interrupted and asked if there was a shorter way to learn all of this. He replied "there is no royal way to geometry." By that he meant that there is no shorter way to learn geometry for king, because their always being treated special. …
