|Ainulindale - Harmony by Anna Kulisz|
|Other names||Flame Imperishable|
|Notable for||Power of Creation|
- "Therefore Ilúvatar gave to their vision Being, and set it amid the Void, and the Secret Fire was sent to burn at the heart of the World; and it was called Eä."
- ― Valaquenta
The Secret Fire, also known as the Flame Imperishable, was Eru Ilúvatar's mysterious power of creation.
The Secret Fire is that aspect of Eru which is his Power of Creation. Only by means of the Secret Fire can something with substance or life be made from nothing. It was by means of the Secret Fire that Eru gave to the Music of the Ainur real being and existence as Eä.
Eru created all fëar, including those of the Ainur, Elves, Dwarves, and Men, through the Secret Fire, and it is a part of each of them. Only a being animated with the Secret Fire can have its own true life and free will. Without it, creatures lack sentience and independent thought, though they may be puppeteered by a greater will. Aulë's Dwarves were such automata until Eru endowed them with their own fëar born of the Secret Fire.
Only Eru as Creator could command the Secret Fire; no created being could claim this power. Given this, it is unclear as to how Melkor could have "made" such creatures as Orcs and Dragons or how these could have acted in the apparently rational and self-directed manner in which they did. See Orcs/Origin for a fuller examination of this thorny issue.
This is an alternate name of the Holy Spirit in Tolkien's mythos, like Eru is the name of God. Clyde S. Kilby mentions a discussion he had with Tolkien: "Professor Tolkien talked to me at some length about the use of the word 'holy' in The Silmarillion. Very specifically he told me that the 'Secret Fire sent to burn at the heart of the World' in the beginning was the Holy Spirit."
- Tolkien, Servant of the Secret Fire by Jonathan McIntosh
- J.R.R. Tolkien, Christopher Tolkien (ed.), The Silmarillion, "Quenta Silmarillion: Of Aulë and Yavanna"
- J.R.R. Tolkien, Christopher Tolkien (ed.), The Silmarillion, "Ainulindalë: The Music of the Ainur"
- J.R.R. Tolkien, Christopher Tolkien (ed.), The Silmarillion, "Valaquenta: [Introduction]"
- J.R.R. Tolkien; Humphrey Carpenter, Christopher Tolkien (eds.), The Letters of J.R.R. Tolkien, Letter 212, (dated 14 October 1958)
- J.R.R. Tolkien, The Lord of the Rings, The Fellowship of the Ring, "The Bridge of Khazad-dûm"
- Clyde S. Kilby, Tolkien and The Silmarillion, "Tolkien as Christian Writer", p. 59