Sun Tzu opens The Art of War by establishing the treatise's foundational premise: warfare represents a matter of such vital, existential importance to the state that it demands the most serious, careful strategic study and preparation, rather than being approached impulsively or without rigorous prior analysis.

Sun Tzu's foundational framing:

• He argues that success or failure in warfare depends on careful advance calculation across five fundamental factors — moral influence, weather, terrain, command, and doctrine — with victory typically going to whichever side has more thoroughly analyzed and prepared across these dimensions before engaging in actual conflict
• This foundational emphasis on preparation and calculation, rather than pure battlefield courage or brute force, distinguishes Sun Tzu's approach throughout the text, positioning strategic thinking and preparation as more decisive than raw military strength alone
• The text's ancient Chinese origin, while addressing literal military strategy, has proven remarkably adaptable to non-military strategic contexts — business, negotiation, competitive strategy — due to its focus on general strategic principles rather than period-specific military technology or tactics

This foundational framing sets up the text's overall approach: presenting concise, aphoristic strategic principles addressing preparation, deception, positioning, and adaptability, principles Sun Tzu argues apply broadly across genuinely varied competitive and conflict situations.