Russell had published his Principles of Mathematics in 1903 and Wittgenstein turned to this work as he sought a better understanding of foundations of his subject.
Russell ay nai-publish na ang kanyang mga Alituntunin ng Matematika sa 1903 at Wittgenstein nabuksan na ito ng trabaho bilang siya sought-unawa ng isang mas mahusay na pundasyon ng kanyang paksa.