William Blake

What is now proved was once only imagined.

Ah! Sun-flower, weary of time, / Who countest the steps of the Sun, / Seeking after that sweet golden clime / Where the traveller's journey is done.

To see a World in a Grain of Sand / And a Heaven in a Wild Flower / Hold Infinity in the palm of your hand / And Eternity in an hour.

Without contraries is no progression. Attraction and repulsion, reason and energy, love and hate, are necessary to human existence.

No bird soars too high if he soars with his own wings.

I must create a system, or be enslaved by another man's; I will not Reason and Compare: my business is to Create.