Lord Krishna... proclaims Self-realization, true wisdom, as the highest branch of all human knowledge-the king of all sciences, the very essence of dharma ("religion")-for it alone permanently uproots the cause of man's threefold suffering and reveals to him his true nature of Bliss. Self-realization is yoga or "oneness" with truth-the direct perception or experience of truth by the all-knowing intuitive faculty of the soul.
Paramahansa YoganandaSincerity is a soul quality that God has given to every human being, but not all express it.
Paramahansa YoganandaThought is the primary energy and vibration that emanated from God and is thus the creator of life, electrons, atoms, and all forms of energy.
Paramahansa YoganandaSince you alone are responsible for your thoughts, only you can change them. You will want to change them when you realize that each thought creates according to its own nature. Remember that the law works at all times and that you are always demonstrating according to the kind of thoughts you habitually entertain. Therefore, start now to think only those thoughts that will bring you health and happiness.
Paramahansa Yogananda