understand what you read. Vocabulary not only aids you in understanding other people, it's also essential in comprehending the books and articles you read. Words you're unfamiliar with become little holes in the text, preventing you from reaching a complete understanding of what you're reading. Assists you in becoming a more informed and involved citizen. Related to the two points above, the more you increase your vocabulary in general, and also specifically in areas like politics, geography, the military, and so on, the better able you become to understand news and currents events, and the more widely varied the conversations, discussions, and debates you can jump into. And when you do take part in a debate, you'll be able to use -- gasp! -- facts, instead of heated bloviations. Bolsters your ability to grasp ideas and think more logically and incisively. While we often think of our thoughts as shaping our words, it works the other way around as well. Think of words like a set of tools -- a small vocabulary is like trying to carve a sculpture with only a chainsaw, versus using a whole set of different instruments that can make both broad and fine cuts. The greater the number of words at your disposal, the more instruments you have with which to hone your own ideas, and dissect and examine those of others. Allows you to communicate effectively. A masterful command of words, and the ability to select just the right ones to express a specific