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“None but the brave deserve the fair.”

To begin with, we note that the phrase “none but the brave” is equivalent to “no not-brave.”

(1) The Subject has for its Attribute “not-brave.” But no Substantive is supplied. So we express the Subject as “not-brave *.”

(2) The Verb is “deserve,” for which we substitute the phrase “are deserving of”.

(3) The Predicate is “ * deserving of the fair.”

(4) Let Univ. be “persons.”

(5) The Sign of Quantity is “no.”

(6) The Proposition now becomes

“No | not-brave persons | are | persons deserving of the fair.”