“True hope is swift, and flies with swallow's wings: Kings it makes gods, and meaner creatures kings.”
Richmond pictures hope as something that moves faster than fear and gives people the courage to act. His comparison of kings with gods is a dramatic assertion of what confidence can do to status and resolve, not a literal transformation.
Source details
Richard III, Act V, Scene 2: Henry, Earl of Richmond, speaking to his allies immediately before marching toward Richard’s army. The passage follows his hope for peace after battle. Wording and punctuation follow the MIT public-domain play text; Folger’s modern-edition punctuation differs. This is a military-political exhortation from a character, not a guarantee of success.