Oliver Wendell Holmes, Jr., Interstate Consolidated Street Railway Company v…
“ It was simply that a 'considerable percentage' of the passengers carried by the company consisted of pupils of the public schools. This might be true without the burden becoming serious. I am not prepared to overrule the decision of the legislature and of the highest court of Massachusetts, that the requirement is reasonable under the conditions existing there, upon evidence that goes no higher than this. It is not enough that a statute goes to the verge of constitutional power. We must be able to see clearly that it goes beyond that power. In case of real doubt a law must be sustained. ”
