be a coward

See: fear
References in classic literature ?
The King of Beasts shouldn't be a coward," said the Scarecrow.
"Perhaps," said the Lion thoughtfully, "if I had no heart I should not be a coward."
"They really are," said the Lion, "but that doesn't make me any braver, and as long as I know myself to be a coward I shall be unhappy."
Every decent man of our age must be a coward and a slave.
I wonder if it's OK to be a coward of sorts, and that just maybe, fear in moderation could be a smart thing?
But the home manager insisted: ''I am not going to walk away - I think that would be a coward's way out."