“And all may do what has by man been done.”

“All I've done since I've been in Washington has been to sit around and try to look wise, and that's what any man has to do who isn't willing to barter his convictions for political expediency. … No man who wants to be intellectually honest has any business in Congress.”

“Do not look back upon what has been done. Go ahead!”

“The more extensive an author's knowledge of what has been done, the greater will be his power of knowing what to do.”

“Doing what has never been done before is intellectually seductive, whether or not we deem it practical.”

“The task of the artist at any time is uncompromisingly simple – to discover what has not yet been done, and to do it.”

“The life of this world is made up of three days: yesterday has gone with all that was done; tomorrow, you may never reach; but today is for you so do what you should do today.”

“No natural boundary seems to be set to the efforts of man; and what is not yet done is only what he has not yet attempted to do.”

“There is one mind common to all individual men. Every man is an inlet to the same and to all of the same. He that is once admitted to the right of reason is made a freeman of the whole estate. What Plato has thought, he may think; what a saint has felt, he may feel; what at any time has befallen any man, he can understand. Who hath access to this universal mind is a party to all that is or can be done, for this is the only and sovereign agent.”

“Another unsettling element in modern art is that common symptom of immaturity, the dread of doing what has been done before.”