I found this online today, and decided to "yoink" it for my own journal. Sadly, the original source was not sited (how fitting)...
"As to the question how all beings came into existence without a first cause, the Buddhist's reply is that there is no answer because the question itself is merely a product of man's limited comprehension. If we can understand the nature of time and relativity, we must see that there could not have been any beginning. It can only be pointed out that all the usual answers to the question are fundamentally defective. If it is assumed that for a thing to exist, it must have had a creator who existed before it, it follows logically that the creator himself must have had a creator, and so on back to infinity. On the other hand, if the creator could exist without a prior cause in the form of another creator, the whole argument falls to the ground. The theory of a creator does not solve any problems, it only complicates the existing ones.
Thus Buddhism does not pay much attention to theories and beliefs about the origin of the world. Whether the world was created by a god or it came into existence by itself makes little difference to Buddhists. Whether the world is finite or infinite also makes little difference to Buddhists. Instead of following this line of theoretical speculations, the Buddha advises people to work hard to find their own salvation.
Scientists have discovered many causes which are responsible for the existence of life, plants, planets, elements and other energies. But it is impossible for anyone to find out any particular first cause for their existence. If they go on searching for the first cause of any existing life or thing, they point certain causes as the main cause but that never becomes the first cause. In the process of searching for the first cause one after the other, they will come back to the place where they were. This is because, cause becomes the effect and the next moment that effect becomes the cause to produce another effect. That is what the Buddha say, 'It is incomprehensible and the universe is beginningless.'"