This world is given as the prize for the men in earnest; and that which is true of this world, is truer still of the world to come.
To be nobody but yourself in a world which is doing its best day and night to make you like everybody else means to fight the hardest battle which any human being can fight and never stop fighting.
Anything looked at closely becomes wonderful.
All that is human must retrograde if it does not advance.
Do not be awe struck by other people and try to copy them. Nobody can be you as efficiently as you can.
Use what you have to run toward your best - that's how I now live my life.
The most exciting phrase to hear in science, the one that heralds new discoveries, is not 'Eureka!' (I found it!) but 'That's funny ...'