For where thou art, there is the world itself, With every several pleasure in the world, And where thou art not, desolation. - William Shakespeare

Give every man thy ear, but few thy voice; Take each man's censure, but reserve thy judgment. But not express'd in fancy; rich, not gaudy; For the apparel oft proclaims the man, And they in France of the best rank and station Are of a most select and generous chief in that.

If we should fail?

Lady Macbeth:
We fail?
But screw your courage to the sticking place,
And we'll not fail.

This fellow is wise enough to play the fool;
And to do that well craves a kind of wit:
He must observe their mood on whom he jests,
The quality of persons, and the time,
And, like the haggard, check at every feather
That comes before his eye. This is a practise
As full of labour as a wise man's art
For folly that he wisely shows is fit;
But wise men, folly-fall'n, quite taint their wit.