The true worth of an experimenter consists in his pursuing not only what he seeks in his experiment, but also what he did not seek.
True worth is in being, not seeming
The greatest of all gifts is the power to estimate things at their true worth
Anyone can make a mistake.... It's how they learn from it and recover from it that shows their true worth.
He who understands you is greater kin to you than your own brother. For even your own kindred neither understand you nor know your true worth.