On March 27, 2024, the world lost a brilliant economist and psychologist, Daniel Kahneman. He passed away at the age of 90 in his home in San Francisco. Born on March 5, 1934 in Tel Aviv, Israel, Daniel was the youngest of four children. He showed an early interest in psychology and earned his Bachelor's degree from Hebrew University in 1954. He then went on to obtain a Master's degree and a Doctorate in Psychology from the University of California, immediately starting his career in academia. Daniel's groundbreaking research in the field of behavioral economics and cognitive psychology challenged traditional economic theories and revolutionized the understanding of how people make decisions. In 2002, he was awarded the Nobel Prize in Economics for his work on prospect theory, which demonstrated that individuals do not always act rationally when it comes to decision making. Throughout his career, Daniel published numerous influential books, including his bestseller "Thinking, Fast and Slow" which became a staple for students and researchers in the field of psychology. He also co-founded the field of behavioral economics with his colleague Amos Tversky, paving the way for further research and advancements in the field. Aside from his academic contributions, Daniel was a dedicated teacher and mentor to many students and colleagues. He will be remembered for his intellect, kindness, and unwavering passion for his work. Daniel's legacy will live on through his groundbreaking research and the impact he had on the field of psychology and economics. He will be greatly missed by his loved ones, colleagues, and the academic community. Daniel Kahneman will be remembered as a giant in his field, whose contributions and discoveries will continue to shape our understanding of human behavior and decision making for generations to come.