I have found two quotations that prove the dominance of Ace in any poker table. The first one came from William Wigstrom:
"Ace is not good, Ace is God."
The other poker quotation about the superiority of the Ace card is given by Mike Caro:
"Aces are larger than life and greater than mountains."
Most poker players sing hallelujah deep inside when they get an ace as one of their hole cards in Texas Hold'em Poker, what more if they got two of them (which is also known in poker slang as pocket aces)? They have every reason to be happy, because poker is the most commanding card in the whole deck.
This is why when players get this at pre-flop, their tendency is to raise. It is very advisable to raise especially when you got pocket aces at pre-flop, because at this point, there can be no other hand higher than yours. And also, you want to eliminate the other hands before the community cards are drawn because pocket aces rarely develop into something stronger, whereas your opponents' hands may improve with the community cards.
A single ace in your hole cards is also good in Texas Hold'em poker, because in the event that no one forms any combination with the community cards, you still have the highest card. It is seldom that poker players fold when they get an ace, after all, there are only four aces in the deck, and they are the highest ones in the deck.
If the first two quotations is about how important ace is in making you win in poker, this next quotation from Amarillo Slim tells that nobody can always in poker.
"Nobody is always a winner, and anybody who says he is, is either a liar or doesn't play poker.
However much good you are, it is impossible that you will be unbeatable in poker. Poker players vary in such a wide range that you really cannot all the strategies of each poker player in the world. Then there is also the thing called luck. Most times luck plays a vital role in poker, and luck does not always stay on one side. There will be days that you will fight with one very lucky poker player, and you will lose.