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.
I must create a system, or be enslaved by another man's; I will not Reason and Compare: my business is to Create.
Keep your eyes on the stars, and your feet on the ground.
There is a time in every man's education when he arrives at the conviction that envy is ignorance; that imitation is suicide; that he must take himself for better, for worse, as his portion; that though the wide universe is full of good, no kernel of nourishing corn can come to him but through his toil bestowed on that plot of ground which is given to him to till.
Kites rise highest against the wind, not with it.