Investing in assets like equities, bonds and commercial property has proven to be the best way to grow capital and protect it from inflation over the long term, despite short term market fluctuations. Historical data from 1987-2015 shows that these assets consistently outperformed cash savings, even after accounting for inflation and various market crises like the Asian currency crisis, dot-com bubble bursting, and global financial crisis. Only cash deposits with banks can guarantee the security of invested capital.