The convergence is YogoLogo's central claim: that Yoga, Stoicism and Buddhism, with modern psychology beside them, point at one destination and trace one shared energy, in different words.
Two claims sit at the heart of YogoLogo. Both are bold, both are oversimplified on purpose, and both are honest in the way that matters.
The destination is shared. Enlightenment: Samadhi (yoga) ≈ Eudaimonia (Stoicism) ≈ Nirvana (Buddhism) ≈ Self-actualisation (modern psychology) ≈ living fully in the now.
The energy is shared. Prana (yoga) ≈ Qi (Traditional Chinese Medicine) ≈ Ki (Japanese traditions, including Reiki): three names for the subtle life energy the path works with.
(A note on self-actualisation: the term has been flattened by corporate use into "becoming your best self." YogoLogo uses Maslow's later sense: self-transcendence, the bridge he himself drew to Buddhist and yogic states. Its full treatment is now on Psychology.)
Think of it as three cartographers from different cultures drawing the same mountain range. The maps look different. The contour lines run at different angles, the names are in different languages, the legends use different symbols. But the mountain is the same mountain. YogoLogo names what the maps share and points readers to the masters of each tradition for everything else.
If that shared destination is the goal, the eight limbs are how you walk toward it, working through the layers of the Layered Self one at a time.
What the strong claim gets right
The destination traditions all describe the same shift in lived experience: from reactive, fragmented, ego-driven living to clear, present, integrated being. They reach it differently. The yogi stills the fluctuations of the mind and rests in pure awareness. The Stoic uses a clear mind to live virtuously in the world. The Buddhist sees through the illusion of a permanent self. The convergence is not in the end-state but in the precondition: the clarity of mind that has to come first. Patanjali calls the work of getting there chitta vritti nirodhah. The Stoics call it prosoche, sustained attention. The Buddhist tradition calls it samatha, calm abiding. Different doors. Same room.
They converge, too, in what they refuse: none takes the radical Cynic road of rejecting society outright, the path of Diogenes, and each finds that the sustainable life runs through the trained middle (drawn out on the cross-tradition map).
There is a fourth voice here too, a modern one, and it is not a fourth ancient tradition but the modern mirror held up to the other three. Part of it descends straight from them: cognitive behavioural therapy, one of the most evidence-backed treatments we have, grew out of Stoic practice. Part of it measures and confirms them: the hedonic treadmill and the science of attention put hard numbers to what the contemplatives already knew. And where psychology has not yet caught up, on the felt fact of consciousness itself, it is honest enough to say so, and the older maps still carry the more precise language. That is why it joins the equation in secular, measured terms, surveying the terrain rather than prescribing the climb, without becoming a fourth practice door. See Psychology.
The energy traditions all describe the same lived territory: a vital force that animates the body, moves through it in recognisable patterns, and when flowing freely, produces health. Yoga traces it through nadis and chakras. Chinese medicine traces it through meridians and organ systems. Japanese arts centre it in the hara and work with it through breath, posture, and touch. All three link breath to life force. All three treat free flow as health and blockage as the beginning of illness. All three build practices (pranayama, qigong, Reiki) to tend the same instrument.
What the strong claim oversimplifies
Two honest acknowledgments are owed: the first about language, the second, just below, about worldview.
Each term has range within its own tradition. Samadhi is not one state; Patanjali distinguishes stages, from samadhi with seed to samadhi without seed to the rarer dharma megha samadhi. Nirvana in Buddhism is read differently across schools, which distinguish the awakening of a being still in a body from final liberation beyond it. Eudaimonia has been read differently across the Stoic and Aristotelian traditions it draws on. Prana differentiates into five major vayus, each governing a different function. Qi in Chinese medicine is classified into original qi, nutritive qi, defensive qi, and more. Ki in Japanese traditions carries its own range across Shinto, martial arts, healing, and everyday usage. YogoLogo is offering a simplified orienting map, not a substitute for the teachings of each tradition. The richness is real and stays with the masters of each.
The cosmologies differ, and the differences are real.
The Buddhist anatta (no permanent self) is not the yogic Purusha (pure awareness as ground). One denies a permanent self; the other points at the awareness in which the no-self is realised. Different claims about what is found. Strikingly similar work in the sitting.
The Stoic uses clarity to act virtuously in the world; the yogi uses it to rest in pure awareness. Same precondition, different downstream expressions of what becomes possible once the mind is clear.
Prana sits inside the Indian framework of Purusha and Prakriti, karma and liberation. Qi sits inside Chinese yin-yang and the Five Phases, aimed at harmony and longevity. Ki sits inside its own Japanese inheritance, Shinto, Buddhist and modern, with its own emphases. The energies are not identical substances dressed in different vocabularies. They are deeply analogous concepts arising from different civilisational experiments in understanding body, mind, and cosmos.
Why the strong claim stays
A bold equation hooks attention. A careful defence survives scrutiny. The maps differ; the territory rhymes. The convergence is at the precondition for the destination and at the territory for the energy. That is true enough in the way that matters, and YogoLogo's job is to point at what the traditions share, then step out of the way so the reader can follow the teachers of each one.