Inspiration arrives as a packet of material to be delivered.

There is little that can withstand a man who can conquer himself.

In three words I can sum up everything I've learned about life: it goes on.

Everyone is a genius at least once a year. The real geniuses simply have their bright ideas closer together.

Knowledge is the most democratic source of power.

Every new beginning comes from some other beginning's end.

Learning never exhausts the mind.

Having knowledge but lacking the power to express it clearly is no better than never having any ideas at all.

All wish to possess knowledge, but few, comparatively speaking, are willing to pay the price.

Our work is the presentation of our capabilities.