Verbatim references:

None
Et sic de similibus references:

Be thankful onto God for all things and for all things give thanks onto God.
(Scripture references under construction)

In every joyful day there will be a little sadness and even in the day of greatest sadness there will be a little ray of sunshine and joy.
(Scripture references under construction)

He who grumbles and complains will fail to give thanks even on the most joyful day because of the wee bit of sadness; but he who has a thankful and grateful heart even in the days of sadness will give thanks because of the little ray of sunshine and joy.
(Scripture references under construction)

Although optimism is not faith; it is akin to it.
(Scripture references under construction)

Though pessimism is not the same thing as doubt; it is a close cousin to it.
(Scripture references under construction)

Rarely do optimistic people fail to give thanks; but pessimistic people rarely ever do.
(Scripture references under construction)

Let us then look for the good in everything and in everything give thanks.
(Scripture references under construction)