Ratnatraya

Jainism emphasises that ratnatraya (triple gems of Jainism) — the right faith ("Samyak Darshana"), right knowledge ("Samyak Gyana") and right conduct ("Samyak Charitra") — constitutes the path to liberation. These are known as the triple gems (or jewels) of Jainism and hence also known as "Ratnatraya"
The Path to liberation.
According to Jainism, purification of soul and liberation can be achieved through the path of three jewels: "Samyak darśana" (Correct View), meaning faith, acceptance of the truth of soul ("jīva"); "Samyak jnana" (Correct Knowledge), meaning undoubting knowledge of the "tattvas"; and "Samyak charitra" (Correct Conduct), meaning behavior consistent with the Five vows. Jain texts often add "samyak tap" (Correct Asceticism) as a fourth jewel, emphasizing belief in ascetic practices as the means to liberation (moksha). The four jewels are called "moksha marg". According to Jain texts, the liberated pure soul ("Siddha") goes up to the summit of universe ("Siddhashila") and dwells there in eternal bliss.
The very first "sloka" (aphorism) of the Sacred Jain text, Tattvartha sutra reads:
Ācārya Pujyapada writes in "Sarvārthasiddhi" (translated by Prof. S. A. Jain):
The Three Jewels.
Right Faith.
Acharya Umaswami has written in "Tattvārthasūtra" that Tattvarthasraddhanam Samyak-darshanam (1-2), which means "Belief in substances ascertained as they are is right faith." 
These seven substances also called "tattva" are:-
Many disciplines of knowledge are developed based on certain fundamental givens, or axioms. For example, Euclidean geometry is an axiomatic system, in which all theorems ("true statements given the axioms") are derived from a finite number of axioms. Special theory of relativity bases itself on one of the fundamental principles called "The Principle of Invariant Light Speed". It takes it as given that light in vacuum propagates with the constant speed in terms of any system of inertial coordinates, regardless of the state of motion of the light source. These seven fundamental concepts, provide the metaphysical structure of Jain philosophy.
In the human state of existence, right faith acquired from destruction as well as from destruction-cum- subsidence. An intelligent conviction and profound faith in the essential nature of the soul, of matter, and of their mutual relationships, actions and reactions, is a necessary condition for launching upon the path of liberation. Jainism declares that a person with the right faith will have spiritual calmness ("Prasanna"), desire for liberation from the endless birth-life-death cycles ("Samvega"), without any attachment or aversion to anything ("Nirveda"), kindness ("Anukampa"), and belief in the "tattvas" (fundamental principles) described just above ("āstika").
Jatismaran Jnana.
As per the first Anga of Jainism, the Acharanga Sutra, and the "Uttaradhyayana Sutra", knowing the soul at experiential level and the ability to know about the past lives ("jatismaran gyan") are important characteristics of a person who has attained "Samyak darshan", at 4th Gunasthana. 
Some of the main causes of jatismaran-jnana are:
Any of the above means may trigger the awareness of earlier births. This, in turn, reveals with certainty that what transmigrates from and to the said directions is none else but 'I' (the soul that is me). This awareness enhances the spontaneous feelings of right faith in dharma, samveg (yearning for liberation), and vairagya bhavana (detachment from the mundane) and induces the knowledge of separation of soul and body ("bhed-gyan").
Right knowledge.
Jain texts mention that knowledge is of five kinds – sensory knowledge, scriptural knowledge, clairvoyance, telepathy, and omniscience. Out of these, sensory knowledge, scriptural knowledge and clairvoyance may also be erroneous knowledge. Most of our knowledge is sensory-based ("mati") and based on recorded knowledge developed by our ancestors in the form of books, articles, papers and other medium ("sruta"). Jain philosophers also include knowledge acquired directly without any medium. This is achieved by removing the karmic veil on the soul.
Right conduct.
Right conduct is the application of the knowledge developed, so as to exercise control over our inner desires and reach a stage where there is no attachment or aversion.
Right conduct includes:
The interesting aspect is that on this path there is a place for every one from the beginner to the most advanced seekers. Further, it encompasses all aspects of human life, namely social, personal, economic and spiritual leading to integrated development of the individual.
Right Faith and Right Knowledge.
Right view and right knowledge are inter-dependent. For instance, when the clouds disappear, both the heat and the light of the sun are manifested simultaneously. Similarly, when right faith is attained by the soul owing to the subsidence, destruction or destruction- cum-subsidence of faith-deluding karmas, right sensory knowledge and right scriptural knowledge are attained by the soul
at the same time by the removal of wrong sensory and wrong scriptural knowledge.
Right Knowledge and Right Conduct.
Right Knowledge must be accompanied by Right conduct which is necessary for the destruction of karmic bonds. Without it there is no release from the cycle of transmigration, i.e., repeated births and deaths. Just like the light from millions of lamps is of no avail to a blind person, studying scriptures alone is of no use to a person who does not apply them.
Stages on the Path to liberation.
Jainism acknowledges that the soul advances to its liberated stage in various steps, called "Gunasthana". Jain literature describes these states in detail. The following provides a concise summary on the various statuses of soul on its journey to spiritual advancement.
5. The soul now begins to observe some of the rules of right conduct with a view to perfecting itself. With the discipline of introductory or minor vows, the soul starts on the process of climbing the spiritual ladder.
6. Major vows taken up with firm resolve to control passions. There may be failures due to lack of full control over passions or carelessness.
7. Intense practice of vows assisted in better self-control and virtually replaced carelessness with spiritual vigilance and vigor.
8. Closer to perfect self-control over actions, higher control over mind, thought and passions with the soul ready for reduction of the effects of conduct-deluding karma.
9. Higher control over removal of passions, and elimination of conduct-deluding karma begins.
10. Complete elimination of all passions except for subtle degree of attachment.
11. Suppressed passions and lingering conduct-deluding karma may rise to drag the soul to lower stages; fleeting experiences of equanimity.
12. This is the point of no return. All passions as well as conduct-deluding karma are eliminated. Permanent internal peace achieved. No new bondage from this point onwards.
13. All inimical karma destroyed. Omniscience achieved and Arihant stage reached. However the perfected soul is still trapped in the physical body (with right knowledge attained).
14. This is the last stage on the Path, and is followed by the soul's destruction of the "aghātiā karmas". Those who pass this stage are called "siddha" and become fully established in Right Faith, Right Knowledge and Right Conduct.