Uncertainty

Uncertainty is the worst of all evils until the moment when reality makes us regret uncertainty

You will never be happy if you continue to search for what happiness consists of. You will never live if you are looking for the meaning of life.

In law, nothing is certain but the expense

Certainty is the mother of quiet and repose, and uncertainty the cause of variance and contentions

A woman's guess is much more accurate than a man's certainty.

I am certain of nothing but the holiness of the heart's affections, and the truth of imagination.

Negative capability, that is, when a man is capable of being in uncertainties, mysteries, doubts, without any irritable reaching after fact and reason.

The imagination of a boy is healthy, and the mature imagination of a man is healthy; but there is a space of life between, in which the soul is in a ferment, the character undecided, the way of life uncertain, the ambition thick-sighted: thence proceeds mawkishness

A weak man has doubts before a decision; a strong man has them afterwards