When performing a presentation, a lecture, even during an informal conversation, how witty and smart we can look, spicing our sentences with some accurate famous quotation. Here are 1.500 of them. Whether we decide to provoke, to generate some debate, to enlighten some concept, or just to get some smiles from our audience, those famous quotations can come in very handy. This book should be used as a permanent tool, especially if we are in the business of communicating or training.