- Some schools say that spiritual Essence is some kind of light. This again does not create any difficulty with the view of Presence. Pres

ence is nothing but the presence of spiritual light; spiritual light can be experienced as a fundamental reality, which has an ontological property. The ontological property of spiritual light is Presence, where light and Presence are not two separate things. By spiritual light, we do not mean the common experience of seeing light in on

e's psyche. The spiritual light we are referring to is a fundamental light of consciousness and awareness.

http://www.ahalmaas.com/Glossary/s/spi

ritual_light.htm

- Light symbolises knowledge and darknes, ignorance. The Lord is the "knowledge principle" (chaitanya) who is the source, the enlivener and the illuminator of all knowledge. Hence light is worshipped as the Lord Himself.

Knowledge removes ignorance just as light rem

oves darkness.

Also, the oil or ghee in the lamp symbo

lises

our vasanas or negative thoughts and the wick, the ego. When lit by spiritual knowledge, the negative thoughts get

exhausted slowly and our ego too finally perishes. The flame of a lamp always burns upwards. Similarly, we should acquire such knowle

dge as to take us t

owards higher ideals.

http://www.mail-archive.com/noragging@yahoogroups.com/msg00658.html

From these examples, light are said to represent the greater force or higher beings in human spirituality. Light is universal and directly connected to life, death, power, and a presence.

Some reference for tree and lights: