e. e. cummings

A lot of people think or believe or know they feel--
but that's thinking or believing or knowing; not feeling.
And poetry is feeling--not knowing or believing or thinking.

Almost anybody can learn to think or believe or know,
but not a single human being can be taught to feel.
Because whenever you think or you believe or you know,
you're a lot of other people--
but the moment you feel, you're nobody-but-yourself.

To be nobody-but-yourself in a world which is doing its best, night
and day, to make you everybody else--means to fight the hardest
battle which any human being can fight; and never stop fighting.

An excerpt from A Poet's Advice