Definitions: (1) courage; boldness; nerve; determination; pluck; perseverance; (2) know-how; expertise; (3) vigor; energy; pep; verve

Courage and perseverance have a magical talisman, before which difficulties disappear and obstacles vanish into air. — John Quincy Adams (1767-1848) 6th President of the United States
• Just remaining quietly in the presence of God, listening to Him, being attentive to Him, requires a lot of courage and know-how. — Thomas Merton (1915–1968) American Trappist monk