Orison Swett Marden：Pushing to the Front, Excerpt 366

Vigorous thought must come from a fresh brain. We cannot expect nerve, snap, robustness and vigor, sprightliness and elasticity, in the speech, in the book, or in the essay, from an exhausted, jaded brain. The brain is one of the last organs of the body to reach maturity (at about the age of twenty-eight), and should never be overworked, especially in youth. The whole future of a man is often ruined by over-straining the brain in school.

Source： https://www.gutenberg.org/ebooks/21291
Locator：Excerpt 366 · Verified：2026-10-19 · Verification：Short excerpt

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