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“Keep thy heart with all diligence; for out of it are the issues of life.”
Guarding inner life is presented as practical because attention and motives influence conduct downstream.
Source note: Proverbs 4:23 in the King James Version.
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“Otherwise, a man is the slave of what other people are pleased to think.”
Dependence on approval can turn other people’s judgments into a form of control; self-respect requires allowing outside opinion to inform rather than govern one’s sense of worth.
Source note: The Wisdom of Life; the sentence appears in Schopenhauer’s criticism of giving excessive weight to reputation and social opinion.
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“You may give them your love but not your thoughts.”
Care can be generous without requiring another person to inherit every belief or preference.
Source note: The Prophet, “On Children.”
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“Trust thyself: every heart vibrates to that iron string.”
The line makes self-trust a prerequisite for independent thought and action.
Source note: Essay “Self-Reliance.”
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“Nothing is at last sacred but the integrity of your own mind.”
Emerson places inner integrity above conformity, arguing that a person should examine inherited standards rather than surrender judgment merely because they are socially approved.
Source note: Self-Reliance, in the passage beginning with Emerson’s argument for nonconformity.
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“It is above all things necessary to form a true estimate of oneself.”
A realistic estimate of one’s abilities and limits supports both confidence and humility, reducing the instability that comes from either self-contempt or exaggerated self-belief.
Source note: Of Peace of Mind, section VI; the passage begins Seneca’s practical advice about matching undertakings to one’s actual powers and disposition.