The Buddha himself once said that there were quite a few inconsistencies in his teachings in order to suit the taste of different audience, but the one that would never change is the teaching on emptiness.  For example, from the point of view of relative truth, impermanence and suffering being the nature of all phenomena are deemed absolute truth, but not from the point of view of the ultimate truth. In the Three Dharma Seals, only no-self is deemed the absolute truth.

- Quote from The Right View, "Buddhism—the Definition"

In the view of Mahayana, the Nirmanakaya (Emanation Body) and the Sambhogakaya (Bliss Body) are the manifestations of the Buddha in order to liberate ordinary people and bodhisattvas of the first to the tenth bhumi, respectively.   The Nirmanakaya is for the Buddha to communicate with ordinary people. Although Buddha-nature exists within the mind of every sentient being, the Dharmakaya (Truth Body) of the Buddha is rendered powerless to those who have not attained realization and thus must rely on the Nirmanakaya and the Sambhogakaya of the Buddha for guidance to enlightenment. However, neither the Nirmanakaya nor the Sambhogakaya is the true Buddha, only the Dharmakaya, the union of wisdom and compassion, is.

- Quote from The Right View, "Buddhism—the Definition"

Actually, the six paramitas practiced by the bodhisattvas are all within the bounds of wisdom and compassion: generosity, discipline and patience are practices of great compassion; one-pointed concentration and insight are that of wisdom; diligence serves as the auxiliary condition to the practice of wisdom and compassion. It is a simple and direct way to define Buddhism as wisdom and compassion. The broader and more profound connotation of Buddhism is the six paramitas.

- Quote from The Right View, "Buddhism—the Definition"

The idea of great compassion, as elucidated by the Buddha, does not exist in any of the worldly schools of thought. The traditional Chinese culture upholds moral principles and the Western culture advocates charity and social welfare.   But the Buddha’s idea of altruism, demonstrated by the meditation practice of tonglen, for example, and the bodhisattva’s commitment to unconditional dedication to others, are unparalleled.

- Quote from The Right View, "Buddhism—the Definition"

The Buddha once said, “I have pointed out for you the way to liberation. You must decide for yourself whether you want to go that way or not.” In other words, the fate of each being is in each one’s own hands, not the Buddha’s. This attitude is different from that of other beliefs, the Savior or the Creator of which would decide who goes to heaven or to hell. Such difference also reflects the kind of freedom, tolerance, equality and peace encompassed in the great compassion of Buddhism.

- Quote from The Right View, "Buddhism—the Definition"

Naturally, before cultivating great compassion, one should generate renunciation first. One cannot have great compassion for sentient beings if one is unaware of the suffering of samsara, because compassion comes from the suffering of sentient beings. No compassion, no bodhicitta either. The other condition for developing renunciation is the desire for liberation. When seeing the suffering of sentient beings, one aspires to save them from the clutches of samsara forever. But on second thought, how can one help others if one cannot attain liberation for oneself in the first place? With this in mind, the two requisites for generating renunciation— aversion to samsara and desire for liberation—are complete.

- Quote from The Right View, "Buddhism—the Definition"

Rongzom Pandita, one of the greatest scholars of the Nyingma lineage, once said, “The invariable definition of Buddhism is wisdom and compassion. No other explanation can fully express the core of Buddhism.”

- Quote from The Right View, "Buddhism—the Definition"

To learn Buddhism is to learn wisdom and compassion. To attain Buddhahood means the manifestation of the inherent wisdom and compassion of Buddha-nature after all the obscurations have been purified. That is all it means.

- Quote from The Right View, "Buddhism—the Definition"

Among the four schools of Buddhism, Sarvastivada1 and Sautrantika did not maintain any idealistic viewpoints at all, neither did the Madhyamaka (Middle Way) school of the Mahayana tradition.

The Yogachara (Consciousness Only) school of Mahayana had a number of sects, of those only one posited a small portion of its views that was somewhat similar to that of idealism.

- Quote from The Right View, "Buddhism—the Definition"