What was the main focus in rationalism?

The main focus of rationalism is the belief that reason and intellect are the primary sources of knowledge and understanding, rather than sensory experience or empirical evidence. Rationalists assert that certain truths can be known a priori, or independently of experience, often emphasizing the role of innate ideas and deductive reasoning. Key figures like René Descartes and Baruch Spinoza contributed to this philosophy, advocating for a systematic approach to knowledge that prioritizes logical deduction and mathematical principles. Ultimately, rationalism seeks to establish a foundation for knowledge that is grounded in reason.