 Chief Judge Learned Hand ... interpreted the [ clear and present danger ] phrase as follows : ' In each case , [ courts ] must ask whether the gravity of the " evil " , discounted by its improbability , justifies such invasion of free speech as is necessary to avoid the danger . ' We adopt this statement of the rule . As articulated by Chief Judge Hand , it is as succinct and inclusive as any other we might devise at this time . It takes into consideration those factors which we deem relevant , and relates their <unk> . More we cannot expect from words . 
