In his poem, A Psalm of Life, Henry Wadsworth Longfellow stated Life is but an empty one of these, while William Cullen Bryant describes in the final lines of Thanatopsis, lying down to pleasant ones of these. Henry David Thoreau stated to go confidently in the direction of these, in order to achieve success, while Langston Hughes spoke about one of these
being deferred, and dry(ing) up, like a raisin in the sun. Name these entities, which Sigmund Freud attempted to interpret in an 1899 book.
a) Dreams
b) Goals
c) Hopes
d) Aspirations