“Love is the extremely difficult realization that something other than oneself is real. Love…is the discovery of reality.”
–Iris Murdoch (“The Sublime and the Good”, in the Chicago Review, Vol. 13, 1959, p. 51)
"The safest general characterization of the European philosophical tradition is that it consists of a series of footnotes to Plato." —Alfred North Whitehead
Footnotes2Plato 
Is it the only other thing that is real?