פירוש על ברכות 71:15

Bacher, A.B. A., p. 51 n. 27 declares that the rendering "Thou keen-witted one" is not beyond dispute, and the expression may refer to his iron endurance in study.

There can be no comparison of the two.

When the heart is extracted, the palm withers; therefore it does not bear the same relation to its tree as other fruit does.