Deepawali ...

Deepawali is a festival which is designed to celebrate the suppression of the Ego by the Higher Self. Man is plunged in the darkness of ignorance and has lost the power of discrimination between the permanent and the evanescent. When the darkness of ignorance caused by Ahamkara (the ego-feeling) is dispelled by the light of Divine knowledge, the effulgence of the Divine is experienced. 

If the darkness of ignorance is to be dispelled, man needs a container, oil, wick and a matchbox corresponding to what an external lamp needs. For man, the heart is the container. The mind is the wick. Love is the oil and vairagya (sacrifice) is the matchbox. When you have these four, Atma-jyothi (the Divine flame of the Spirit) shines effulgently. When the light of the Spirit is aflame, the Light of Knowledge appears and dispels the darkness of ignorance.

The flame of a lamp has two qualities. One is to banish darkness. The other is a continuous upward movement. Even when a lamp is kept in a pit, the flame moves upwards. The sages have therefore adored the lamp of wisdom as the flame that leads men to higher states. Hence, the effulgence of light should not be treated as a trivial phenomenon. Along with lighting the external lamps, men should strive to light the lamps within them. The human estate should be governed by sacred qualities. This calls for the triple purity of body, mind, and speech--Trikarana Suddhi (purity of the three instruments).

The inner significance of Deepavali is to lead man from darkness to light. Man is perpetually plunged in darkness. Every time he is enveloped in darkness, he should light a lamp that is ever shining within him. Carry that lamp wherever you go. It will light your path wherever you may be.

Courtesy: One of my friend shared this info and I could not stop from posting it here... 

Om Asato Maa Sad-Gamaya |
Tamaso Maa Jyotir-Gamaya |
Mrtyor-Maa Amrtam Gamaya |
Om Shaantih Shaantih Shaantih ||

Meaning:

1: Om, Lead us from Unreality (of Transitory Existence) to the Reality (of Self),
2: Lead us from the Darkness (of Ignorance) to theLight (of Spiritual Knowledge),
3: Lead us from the Fear of Death to the Knowledge of Immortality.
4: Om Peace, Peace, Peace.