Certainly it is one of our sweetest experiences that when we are touched by some noble affection or pure joy, we remember the dead most tenderly, and feel more powerfully drawn to them.

Christmas Day is the festival of optimism.

Knowledge is happiness, because to have knowledge - broad, deep knowledge - is to know true ends from false, and lofty things from low.

Self-pity is our worst enemy and if we yield to it, we can never do anything wise in this world.

Now I feel as if I should succeed in doing something in mathematics, although I cannot see why it is so very important. . . The knowledge doesn't make life any sweeter or happier, does it?

When indeed shall we learn that we are all related one to the other, that we are all members of one body?

I wonder what becomes of lost opportunities? Perhaps our guardian angel gathers them up as we drop them, and will give them back to us in the beautiful sometime when we have grown wiser, and learned how to use them rightly.