I would like to conclude my speech by saying the famous words of George Washington Carveer " Education is the key to unlock the Golden door of Freedom "
In the future days, which we seek to make secure, we look forward to a world founded upon four essential human freedoms. The first is freedom of speech and expression everywhere in the world. The second is freedom of every person to worship God in his own way everywhere in the world. The third is freedom from want . . . . The fourth is freedom from fear . . . . Which best explains why Roosevelt evokes the theme of freedom in this excerpt?
A writer can express his/her theme through different techniques. Some examples would be word choice, tone, mood, and even characterization. I hope this helps.