(meditations "We shall contemplate truth by testing reality, via equality." (= __ true) "To understand reality, we must compare our expectations against reality." (= __ (+ 1 1)) "You can test equality of many things" (= (+ 3 4) __ (+ 2 __)) "Some things may appear different, but be the same" (= 2 2/1 __) "You cannot generally float to heavens of integers" (= __ (= 2 2.0)) "But a looser equality is also possible" (== 2.0 2 __) "When things cannot be equal, they must be different" (not= nil __))