H. U. Westermayer:

The Pilgrims made seven times more graves than huts. No Americans have been more impoverished than these who, nevertheless, set aside a day of thanksgiving.

Cicero:

Gratitude is not only the greatest of virtues, but the parent of all the others.

Seneca:

There is as much greatness of mind in acknowledging a good turn, as in doing it.

Buddha:

Let us rise up and be thankful, for if we didn't learn a lot today, at least we learned a little, and if we didn't learn a little, at least we didn't get sick, and if we got sick, at least we didn't die; so, let us all be thankful.

Meister Eckhart:

If the only prayer you said in your whole life was,"thank you," that would suffice.

So, here goes the 2000 year old Shehecheyanu

Blessed are you, God, King of the Universe for keeping us alive, sustaining us and bringing us to this time.