Some regard Buddhism as a kind of belief. Belief also means faith. Of course faith is needed in Buddhism, but it would be oversimplified to regard Buddhism as a belief since keeping faith is only one of the aspects of Buddhism.  The foundation and the priority of Buddhism are not about belief, but wisdom and compassion.  Although Buddhism does advocate the importance of faith, it is not unique to Buddhism; science also calls for faith.  For example, people today all want to promote faith in science.  If one does not trust science, one probably would not even dare to take airplane.  People take planes because they believe in the technology that allows airplane to transport people to their destinations.  It takes faith to accomplish anything in this world, the same kind of faith as in Buddhism. Therefore, it is incorrect to equate Buddhism with belief.

~Depicted from THE RIGHT VIEW - Buddhism—the Definition

It happens quite often that people make speedy progress at the initial stage of their practice, but the progress tapers off after some time. Worse, some may even stop practicing altogether. This is mainly due to a lack of systematic approach to Buddhist practice. What should be done about it? First, we must understand what the foundational practices are and duly recognize the importance they command on our spiritual journey.

~Depicted from THE RIGHT VIEW - The Three Supreme Methods—the ultimate methods of cultivating virtue and training the mind

As stated in the sutras, “Existence in the human realm is rare, and all is impermanent.” Most of you here are already in your 30s and 40s. The remaining days, a few more decades at the most, are really not that long and will soon pass by before you know it. Unfortunately, there is no guarantee the opportunity to practice will present itself again in the next life if you fail to seize it this time. So the point is to lay the necessary foundation now as the stepping-stones leading to a better start for the next life.

~Depicted from THE RIGHT VIEW - The Three Supreme Methods—the ultimate methods of cultivating virtue and training the mind

The Buddha’s approach is always logical rather than dogmatic. The Buddha told us that underneath the skin, there are thirty six kinds of impure elements such as bacteria, microbes and parasites, among others, operating in an environment that’s both chaotic and unclean. Moreover, the notion of being beautiful or ugly is just a matter of meeting the expectations of most people. In the eyes of an extraterrestrial or a person of different race, a woman we consider beautiful may perhaps be deemed ugly. Even a real beauty will lose her appeal from overexposure or with age.

Through these observations, we come to realize that there is neither a thing nor a person that has genuine and absolute beauty. At this point, our minds can relax a little bit, no longer being so obsessed and anxious. Then with further observation and contemplation, we can slowly abandon our old attachment.

~Depicted from THE HANDBOOK FOR LIFE'S JOURNEY - On The Three Poisons-How to Handle Desire

Buddhism, certainly Tibetan Buddhism, places great importance on happiness. The emphasis in Mahayana Buddhism is not on one’s own happiness but rather that of all sentient beings. When we strive for the welfare of all beings, we can at the same time attain even greater happiness for ourselves. This well-being ultimately surpasses any that material enjoyment can bring. Such is the Tibetan Buddhist view on happiness.

~Depicted from ARE YOU READY FOR HAPPINESS - The Tibetan Buddhist View on Happiness

Sentient beings in general, certainly the beings in hell and even the gods, do not have the opportunity to practice on the path of liberation. To establish a foundation for practice on the path of liberation, one must start in the human realm. Gods can also practice if they laid the basis of the practice in their previous life as a human being; thus, establishing this foundation in a previous life as a human is the only condition that governs whether they can continue to practice or not.

~Depicted from THE FOUR SEALS OF DHARMA - All Contaminated Things are Unsatisfactory

During visualization, if some parts come up clear, some parts not so clear, we need to look at those that are not so clear again and again. If the image to be visualized and that which appears are different --for example, we visualize a sitting buddha but a standing buddha appears instead when we close our eyes; we visualize a tiny image but a huge one appears; we visualize a colorful image but a black and white version appears, and so on—we still need to look at the deity image repeatedly and steadily. With practice, this problem can be solved.

~Depicted from GATEWAY TO VAJRAYANA PATH - The Generation Stage

Vajrayana Buddhism was developed in two stages: the First and the Second Propagation period. The period of the First Propagation refers to Nyingmapa whose central teaching is Dzogchen, or Great Perfection. The tantras of Great Perfection specify clearly that no meat eating be allowed. The period of the Second Propagation refers to Gelugpa, Kagyupa, Sakyapa and all the other schools of Vajrayana Buddhism in Tibet except Nyingmapa. Of all the tantras of this period, the most important and pivotal is the Kalachakra Tantra. Both the Tantra and its annotations specify very clearly that meat eating is not allowed. All these point to the fact that Mahayana Buddhism, be it exoteric or esoteric, is against eating meat.

~Depicted from THE RIGHT VIEW - Why Vegetarian?

A practitioner should stay detached when circumstances so require, and remain attached if attachment is called for. When cultivating bodhicitta, attachment is essential. Sakyamuni Buddha said that at that point our self-attachment should be bigger than Mount Meru — I want to attain Buddhahood, I want to free all sentient beings from suffering, I want to undertake actions that are beneficial to others, etc. This kind of self-attachment is indispensable at the beginning; with practice, one gradually dispels the wrong kind of self- attachment, creates the conditions for realizing emptiness and compassion, and ultimately eradicates all forms of attachment. Thus, the delineation between attachment and non-attachment must be very clear.

~Depicted from THE FOUR SEALS OF DHARMA - The Practice of No-Self