The essential in daring is to know how far one can go too far

Being tactful in audacity is knowing how far one can go to far.

Tact in audacity is knowing how far you can go without going too far.

We fail far more often by timidity than by over-daring.

Tact consists in knowing how far to go too far

Take a commonplace, clean it and polish it, light it so that it produces the same effect of youth and freshness and originality and spontaneity as it did originally, and you have done a poet's job. The rest is literature.