math

When viewed in this light, the achievement of the unknown Hindu who some time in the first centuries of our era discovered the principle of position assumes the proportions of a world-event. Not only did this principle constitute a radical departure in method, but we know now that without it no progress in arithmetic was possible.

It is [in India] that the ingenious manner of expressing all numbers in ten characters originated, by assigning to them at once an absolute and a local [positional] value. a subtle and important conception, of which the simplicity is such that we can [only] with difficulty, appreciate its merit.

Paul Erdos has passed on to us Hardy's personal ratings of mathematicians. Suppose that we rate mathematicians on the basis of pure talent on a scale from 0 to 100, Hardy gave himself a score of 25, Littlewood 30, Hilbert 80 and Ramanujan 100.