The aleph can be translated as 'I'. Hidden in the aleph is the name of God he gave him self before creation. Because the aleph is a silent letter, you cannot say his name. If we try to pronounce the yod-vav-yod which form the aleph, it would sound something like 'ee-oo-ee' which is very similar to ''Yahweh''. It is a matter of myth that we can't say 'Yahweh', but because this is the name God told Moses to call him. We really can't say his name in the aleph, because the aleph is silent.