Come by

come by (to acquire, to gain) - uzyskać, zdobyć.

1. How did he ever come by so much money. [...gain co much...]
2. The wisdom is the hardest to come by. [...hardest to acquire]
3. Order doesn't come by itself. (Mandelbrot) [is not acquired]
4. Well, a lot of successes come by mistake. [are gained because of mistake]