The great body of physical science, a great deal of the essential fact of financial science, and endless social and political problems are only accessible and only thinkable to those who have had a sound training in mathematical analysis, and the time may not be very remote when it will be understood that for complete initiation as an efficient citizen of one of the new great complex worldwide States that are now developing, it is as necessary to be able to compute, to think in averages and maxima and minima, as it is now to be able to read and write.

When a man realizes his littleness, his greatness can appear.

Find the thing you want to do most intensely, make sure that’s it, and do it with all your might. If you live, well and good. If you die, well and good. Your purpose is done

What really matters is what you do with what you have.

Leaders should lead as far as they can and then vanish. Their ashes should not choke the fire they have lit.

I was never a great amorist, though I have loved several people very deeply.

What on earth would a man do with himself, if something did not stand in his way?