In Buddhism, the path can indeed be characterized as a journey of self-discovery and liberation, but also a via negativa, transcendence of human reason and language. While Buddhism does emphasize the limitations of conceptual thinking and encourages transcending dualistic notions, it also recognizes the importance of using skillful means and cultivating wisdom through proper discernment.
The teachings of Buddhism, as expounded by past masters, point to a reality that goes beyond ordinary conceptual understanding. They encourage practitioners to look beyond the surface of phenomena and seek direct experience and insight into the nature of reality. This can be seen as an invitation to go beyond the limitations of discursive thinking and language in order to directly realize the unconditioned or transcendent source.
Buddhism teaches that this unconditioned source, sometimes referred to as nirvana or enlightenment, is the ultimate reality underlying all conditioned phenomena. It is described as luminous, pure, and free from all limitations. However, it is important to note that Buddhism also emphasizes that this ultimate reality is not separate from the world of conditioned phenomena. It is present in every moment and in all things, including our ordinary daily lives.
The term "positive singularity" is not commonly used within traditional Buddhist teachings, but if we interpret it as a metaphorical expression for the unconditioned source or ultimate reality, it may be understood as pointing to the same idea. Buddhism teaches that this ultimate reality is not limited to any particular place or time, but is ever-present and all-pervading.
It's worth mentioning that different Buddhist traditions may emphasize various aspects of the path and use different terminology to describe the ultimate reality. Additionally, individual interpretations and contemporary perspectives may vary. Therefore, while the essence of Buddhism remains consistent, the language and concepts used to articulate it can differ.