This is a statement in the context of the origin of life and evolution. For life to have originated, some molecules made of carbon and hydrogen had to join together in a unique pattern. Now the number of ways in which these could have joined is very large. And there are only a few formations that can be called alive. It therefore required a long duration of time, before millions of different combinations occurred finally leading to one that had life.
Similarly, evolution is all about probabilities. There are millions of ways in which genes can link up to form different organisms. And the possibility that the genetic make-up of the offspring is better is quite small. Therefore, a long duration of time is required for life to evolve.
In short, if there is enough time for the unimaginably large number of combinations and permutations to occur, any new organism better than all those present now, can be created through evolution.
He is true. If life evolve all of a sudden, then the time would not have any value. Fortunately, it evolves such slow pace that we have ample time to stare and admire its beauty!
Its not only time but right place and right situation also required for advanced life to stem up.