As well as starting up the new area of mathematics now called 'Ramsey theory', which we say more about below, he wrote on the foundations of mathematics, economics and philosophy.
Pati na rin ang simula hanggang sa bagong lugar ng matematika na tinatawag na 'Ramsey theory', na kung saan namin sabihin ang nalalaman tungkol sa ibaba, he wrote on ang pundasyon ng matematika, ekonomiya at pilosopiya.