I only hope when I land in Jerusalem that my optimism will prove to be founded.

The optimism proved to be short lived.

This optimism proved unfounded; instead Vietnam staggered from one economic crisis to another.

The optimism and confidence invested in heterosexuality proved to be greatly misplaced.

The optimism that swept Wall Street last week, in the wake of a good report on March consumer prices, may prove to have been overdone.

Yet there remains the thought that some evil will still destroy the poet's hopes, and optimism may prove unfounded.

But when confidence collapsed, that optimism proved foolish.

As this optimism proved to be unfounded, scholars turned to study more closely what was then called the traditional sector.

European stocks hit a five-week closing high, though analysts were wary the optimism could prove overdone.

I hope his optimism proves justified.