Intuition is given only to him who has undergone long preparation to receive it.
Luck favors the mind that is prepared.
Do not put forward anything that you cannot prove by experimentation.
To bring one's self to believe in a truth that has just dawned upon one is the first step towards progress; to persuade others is the second.
Do not let yourself be tainted with a barren skepticism.
The Greeks bequeathed to us one of the most beautiful words in our language--the word 'enthusiasm'--en theos--a god within. The grandeur of human actions is measured by the inspiration from which they spring. Happy is he who bears a god within, and who obeys it.