Road to Calculus.

The road to calculus is steadily being built. Mathematicians are constantly making breakthroughs but they could not do it if the foundation had not been laid down properly. The very first stones of the road were laid down in Greece, as are most of the foundations for math. The first stone was laid down in 450B.C. Calculus has traveled a long road since then, with a lot of stones placed in the foundations by …

…the 1800's with his definition of a limit. He was the first person to assign mathematically rigorous meaning to "x approaches a." and "f(x) becomes arbitrarily close to L.". The road to calculus was a long road that took several influential people to build. It is still not complete even though a lot of major breakthroughs have been accomplished. Who knows somebody may come along someday and prove everybody has been wrong so far.