This document discusses the key differences between investment and speculation. It defines investment as sacrificing something now for prospective future gains, involving the dimensions of time, today's sacrifice, and expected returns. Speculation is described as involving gut feelings, greed, fear, a focus on profits rather than assets, and greater risk-taking. The document provides examples to illustrate how the intentions and time horizons behind different transactions can determine whether they are investments or speculations. It stresses the importance of financial goals aligning with life goals and considering constraints like liquidity, age, time horizon, and risk tolerance when making investment decisions.