Final answer:
Warren Buffet's personal philosophical approach is not explicitly documented, but his investment strategies suggest a blend of utilitarianism and consequentialism, aiming to maximize value for many. However, without clear statements, it's speculative to attribute a specific ethical framework to Buffet.
Step-by-step explanation:
The personal philosophical approach that Warren Buffet believes in is not definitively documented in public sources. However, when considering the principles of utilitarianism, deontology, virtue ethics, and consequentialism, it can be argued that Buffet demonstrates aspects of utilitarianism and consequentialism in his investment philosophy, as he often focuses on creating value and generating wealth for the greatest number.
Utilitarianism, introduced by Jeremy Bentham and further developed by John Stuart Mill, posits that an action is moral if it provides the greatest good to the greatest number. This aspect aligns with Buffet's investment strategy, which aims to maximize shareholder value. However, there isn't a clear answer as Buffet may also incorporate aspects of virtue ethics, emphasizing character, in the way he conducts his business and personal life, which he has shared in his letters and biography.
To accurately pinpoint Warren Buffet's personal philosophical approach, one would need direct statements or credible sources that detail Buffet's explicit endorsement of a particular ethical framework.