Jacques Bernoulli was a Swiss mathematician born in 1654, known for his significant contributions to probability theory and calculus. He was part of the famous Bernoulli family, which included several other prominent mathematicians. One of his most notable works is "Ars Conjectandi," published posthumously in 1713, where he laid the groundwork for modern probability. In addition to his work in probability, Bernoulli made advancements in the field of calculus, particularly in the study of infinite series. His ideas helped shape the understanding of mathematical concepts that are still used today. Jacques Bernoulli's legacy continues to influence mathematics and statistics.