The precepts and the development of morality is a very fundamental part of the Buddhist path. The precepts lay the groundwork for the further mental and emotional development that will eventually lead to liberation. In taking up the precepts, the follower of the Buddha consciously affirms the most basic values that all people seem to know instinctively. Through the development of basic morality, we are protected from all manner of evil; whether the inner torment of a guilty conscience, the social and legal consequences of wrongdoing, or a future rebirth in unfortunate circumstances. Taking the precepts is also a sign of determination and sincerity. It shows that we are no longer willing to compromise our integrity or harm others for worldly gain, because we have aspired to the highest goal. The precepts also cause us to be more mindful of our daily activities; they provide a yardstick by which we can improve our character in every facet of life through exploring their implications in everyday situations.
The precepts are not just negative injunctions either; each of the precepts has a positive value as well. Those who truly follow the precepts against killing, stealing, sexual misconduct, lying and taking intoxicants will naturally develop the qualities of humility, love, compassion, generosity and honesty. Such people will not harm themselves or others; and instead, will seek to protect all beings. In being guided by the precepts, we can cultivate a character that is not only blameless, but also pure and worthy of respect.
Morality is an indispensable element of the Buddhist path, but moral discipline is not an end unto itself. Morality that is not supported by the practice of concentration and insight can easily wither away or degenerate into puritanical self-righteousness. It is only truly fulfilled when it acts as the basis for the cultivation of the mind that leads to perfect and complete awakening for the sake of oneself and all other beings. For the bodhisattva, morality functions as one of the perfections when it is guided by wisdom and thus accompanied by generosity, patience, energy, and meditation, all of which are practiced for the sake of all beings.
Open Your Eyes, p460