The renowned American psychologist Richard E. Nisbett has created a toolkit for optimal reasoning in everyday life in his non-fiction book 'Thinking Clearly'. We make decisions and judgments every day. Often, we are not aware of the mechanisms behind them—and that is detrimental to our decisions and judgments. However, there is a remedy. Nisbett, whom Malcolm Gladwell describes as the "most influential thinker" of his life and whom Rolf Dobelli credits with "mastering the art of clear thinking," explains in an easily understandable way how we can think more appropriately about the world and ourselves, make smarter decisions, categorize more accurately, recognize relationships, distinguish between true and false causal connections, and improve our logical and dialectical reasoning. Entertaining and filled with numerous examples from everyday life.