CHANCE

All nature is but art, unknown to thee;

All chance, direction, which thou canst not see;

All discord, harmony not understood;

All partial evil, universal good;

And spite of pride in erring reason's spite,

One truth is clear, Whatever is, is right.

Alexander Pope (1688-1744) from Essay on Man.

We do not what we ought,

What we ought not, we do,

And lean upon the thought

That Chance will bring us through.

Matthew Arnold (1822-1888)  from Empedocles on Etna.