I want to say to those who are trying to learn to speak and those who are teaching them: Be of good cheer. Do not think of today's failures, but of the success that may come to-morrow. You have set yourselves a difficult task, but you will succeed if you persevere, and you will find a joy in overcoming obstacles - a delight in climbing rugged paths, which you would perhaps never know if you did not sometime slip backward - if the road was always smooth and pleasant. Remember, no effort that we make to attain something beautiful is ever lost. Sometime, somewhere, somehow we shall find that which we seek. We shall speak, yes, and sing, too, as God intended we should speak and sing.
Address to the American Association to Promote the Teaching of Speech to the Deaf at Mt. Airy, Philadelphia, Pennsylvania
The Passionate State Of Mind, and Other Aphorisms (1955) Section 181
letter to Nikola Tesla for Tesla's 75th birthday (1931)
Kofi Annan: Center of the Storm (2003)
The Plain Speaker (1826) "Whether Genius is Conscious of its Powers?"
W. Clement Stone later added the line "...with P.M.A." (Positive Mental Attitude) to the end of this quote.