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a kernel of truth

A singular element of truth or wisdom within a greater story, narrative, speech, or claim, especially when most or all other elements are fictitious or of questionable veracity. I think the governor's speech is a bunch of hogwash by and large, but there is a kernel of truth in what he said about the need for lower taxes.
See also: kernel, of, truth

He that would eat the kernel must crack the nut.

Prov. You have to work if you want to get anything good. If you want to be a good pianist, you have to practice every day. He that would eat the kernel must crack the nut.
See also: crack, eat, he, kernel, must, nut, that
References in periodicals archive ?
Some researchers proposed syntactic and semantic kernels for text classification [23] [16] [28].
It is an industry-wide project with the idea of having a common base kernel for electronics that can be maintained individually to the benefit of all instead of privately within each company.
Analysis of variance (not shown) indicated significant environmental effects, genotype effects, and significant genotype x environment interaction for whorls per panicle, spikelets per panicle, kernels per panicle, grain mass per panicle, and mean mass per kernel.
Those popcorn varieties with the highest degree of crystallinity yielded the fewest unpopped kernels, the Purdue team reports in a forthcoming Biomacromolecules.
Future LynuxWorks UML versions will allow developers to port and virtualize the Linux kernel onto other OSes and provide a completely authentic Linux environment to run any Linux executable.
These results indicate that if corn is cleaned to remove broken kernels before it is stored, the likelihood that stored-grain insects like Indian meal moth will become a problem in the storage bin is much less.
Data from Kiniry and Musser (1988) support the observation that genotypes may differ in kernel density during grain filling as well as the possibility that kernels coming from different positions within the sorghum panicle may also have differences.
Find the volume of the 50 unpopped kernels by measuring them in the graduated cylinder.
Every three months for a year, they measured the enzyme content of individual kernels and cobs from the two group.
A major goal in hybrid seed production, in fact, is to reduce the area dedicated to male rows as much as possible without decreasing the number of kernels harvested per area (Wych, 1988).