Firm

Definitions: (1) showing positive determination; resolute; steady; (2) full of or indicating vigorous strength; fixed; stable; (3) unchanging; constant <a firm unshakable faith>

Synonyms: robust, rugged, staunch, steadfast, sturdy, tenacious, unfaltering, unyielding

Balancing Quality: soft

Quotes:
• A successful man is one who can lay a firm foundation with the bricks others have thrown at him. — David McClure Brinkley (1920–2003) American newscaster
• Wisdom does not show itself so much in precept as in life – in firmness of mind and a mastery of appetite. It teaches us to do as well as to talk; and to make our words and actions all of a color. — Lucius Annaeus Seneca the Younger (c. 4 BC–AD 65) Roman Stoic philosopher

Symbols: 1) the leg; 2) the column