Dream no small dreams for they have no power to move the hearts of men.

No prudent antagonist thinks light of his adversaries.

Whatever is the lot of humankind I want to taste within my deepest self. I want to seize the highest and the lowest, to load its woe and bliss upon my breast, and thus expand my single self titanically and in the end go down with all the rest.

The highest cannot be spoken; it can only be acted.

And I have again observed, my dear friend, in this trifling affair, that misunderstandings and neglect occasion more mischief in the world than even malice and wickedness. At all events, the two latter are of less frequent occurrence.

Doubt can only be removed by action.

It is the great triumph of genius to make the common appear novel.