What does he say is necessary to make these things possible

The answer is Higher taxes.

Explanation:

A part of the sacrifice means the payment of more money in taxes. In my Budget Message I shall recommend that a greater portion of this great defense program be paid for from taxation than we are paying today. No person should try, or be allowed, to get rich out of this program; and the principle of tax payments in accordance with ability to pay should be constantly before our eyes to guide our legislation.

a hue is a character or aspect.

showing or suffering from nervousness, fear, or a lack of confidence