A journey of a thousand miles begins with a single step. -- Lao-tzu, The Way of Lao-tzu (604 BC - 531 BC)
This wisdom still holds true even after 2600 years. Though fellow software developers may be more familiar with this version:
A project of a thousand lines begins with "Hello World!". -- Kernighan, Tutorial to B (1972)
Hello World! This is my first step. May 1000 more follow.